WhatsNew
Document History
- Latest documentation update: September 18, 2019
- Current API version: 2006-03-01
The following table describes the important changes in each release of the Amazon Simple Storage Service Developer Guide from June 19, 2018, onward. For notification about updates to this documentation, you can subscribe to an RSS feed.
| Change | Description | Date |
|---|---|---|
| Same-Region replication | Same-Region replication (SRR) is used to copy objects across Amazon S3 buckets in the same AWS Region. For information about both cross-Region and same-Region replication, see Replication. | September 18, 2019 |
| Cross-Region replication support for object lock | Cross-Region replication now supports Amazon S3 object lock. For more information, see Cross-Region Replication and What Does Amazon S3 Replicate?. | May 28, 2019 |
| Amazon S3 batch operations | Using Amazon S3 batch operations you can perform large-scale batch operations on Amazon S3 objects. Amazon S3 batch operations can execute a single operation on lists of objects that you specify. A single job can perform the specified operation on billions of objects containing exabytes of data. For more information, see Performing Batch Operations. | April 30, 2019 |
| Asia Pacific (Hong Kong) Region | Amazon S3 is now available in the Asia Pacific (Hong Kong) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | April 24, 2019 |
| Added a new field to the server access logs | Amazon S3 added the following new field to the server access logs: Transport Layer Security (TLS) version. For more information, see Amazon S3 Server Access Log Format. | March 28, 2019 |
| New archive storage class | Amazon S3 now offers a new archive storage class, DEEP_ARCHIVE, for storing rarely accessed objects. For more information, see Storage Classes. | March 27, 2019 |
| Added new fields to the server access logs | Amazon S3 added the following new fields to the server access logs: Host Id, Signature Version, Cipher Suite, Authentication Type, and Host Header. For more information, see Amazon S3 Server Access Log Format. | March 5, 2019 |
| Support for Parquet-formatted Amazon S3 inventory files | Amazon S3 now supports the Apache Parquet (Parquet) format in addition to the Apache optimized row columnar (ORC) and comma-separated values (CSV) file formats for inventory output files. For more information, see Amazon S3 Inventory. | December 4, 2018 |
| Restore speed upgrade | Using Amazon S3 restore speed upgrade you can change the speed of a restoration from the GLACIER storage class to a faster speed while the restoration is in progress. For more information, see Restoring Archived Objects. | November 26, 2018 |
| Restore event notifications | Amazon S3 event notifications now supports initiation and completion events when restoring objects from the GLACIER storage class. For more information, see Event Notifications. | November 26, 2018 |
| PUT directly to the GLACIER storage class | The Amazon S3 PUT operation now supports specifying GLACIER as the storage class when creating objects. Previously, you had to transition objects to the GLACIER storage class from another Amazon S3 storage class. Also, when using cross-Region replication (CRR), you can now specify GLACIER as the storage class for replicated objects. For more information about the GLACIER storage class, see Storage Classes. For more information about specifying the storage class for replicated objects, Replication Configuration Overview. For more information about the direct PUT to GLACIER REST API changes, see Document History: PUT directly to GLACIER . | November 26, 2018 |
| New storage class | Amazon S3 now offers a new storage class named INTELLIGENT_TIERING that is designed for long-lived data with changing or unknown access patterns. For more information, see Storage Classes. | November 26, 2018 |
| Amazon S3 Object Lock | Amazon S3 now offers Object Lock functionality that provides Write Once Read Many protections for Amazon S3 objects. For more information, see Locking Objects. | November 26, 2018 |
| Amazon S3 Block Public Access | Amazon S3 now includes the ability to block public access to buckets and objects on a per-bucket or account-wide basis. For more information, see Using Amazon S3 Block Public Access. | November 15, 2018 |
| Filtering enhancements in cross-Region replication (CRR) rules | In a CRR rule configuration, you can specify an object filter to choose a subset of objects to apply the rule to. Previously, you could filter only on an object key prefix. In this release, you can filter on an object key prefix, one or more object tags, or both. For more information, see CRR Setup: Replication Configuration Overview. | September 19, 2018 |
| New Amazon S3 Select features | Amazon S3 Select now supports Apache Parquet input, queries on nested JSON objects, and two new Amazon CloudWatch monitoring metrics (SelectScannedBytes and SelectReturnedBytes). | September 5, 2018 |
| Updates now available over RSS | You can now subscribe to an RSS feed to receive notifications about updates to the Amazon Simple Storage Service Developer Guide. | June 19, 2018 |
Earlier Updates
The following table describes the important changes in each release of the Amazon Simple Storage Service Developer Guide before June 19, 2018.
| Change | Description | Date |
|---|---|---|
| Code examples update | Code examples updated: [See the AWS documentation website for more details] | April 30, 2018 |
| Amazon S3 now reports GLACIER and ONEZONE_IA storage classes to Amazon CloudWatch Logs storage metrics | In addition to reporting actual bytes, these storage metrics include per-object overhead bytes for applicable storage classes (ONEZONE_IA, STANDARD_IA, and GLACIER ): [See the AWS documentation website for more details] For more information about storage metrics, see Monitoring Metrics with Amazon CloudWatch. | April 30, 2018 |
| New storage class | Amazon S3 now offers a new storage class, ONEZONE_IA (IA, for infrequent access) for storing objects. For more information, see Amazon S3 Storage Classes. | April 4, 2018 |
| Amazon S3 Select | Amazon S3 now supports retrieving object content based on an SQL expression. For more information, see Selecting Content from Objects. | April 4, 2018 |
| Asia Pacific (Osaka-Local) Region | Amazon S3 is now available in the Asia Pacific (Osaka-Local) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. You can use the Asia Pacific (Osaka-Local) Region only in conjunction with the Asia Pacific (Tokyo) Region. To request access to Asia Pacific (Osaka-Local) Region, contact your sales representative. | February 12, 2018 |
| Amazon S3 inventory creation timestamp | Amazon S3 inventory now includes a timestamp of the date and start time of the creation of the Amazon S3 inventory report. You can use the timestamp to determine changes in your Amazon S3 storage from the start time of when the inventory report was generated. | January 16, 2018 |
| Europe (Paris) Region | Amazon S3 is now available in the Europe (Paris) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | December 18, 2017 |
| China (Ningxia) Region | Amazon S3 is now available in the China (Ningxia) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | December 11, 2017 |
| Querying archives with SQL | Amazon S3 now supports querying S3 Glacier data archives with SQL. For more information, see Querying Archived Objects. | November 29, 2017 |
| Support for ORC-formatted Amazon S3 inventory files | Amazon S3 now supports the Apache optimized row columnar (ORC) format in addition to comma-separated values (CSV) file format for inventory output files. Also, you can now query Amazon S3 inventory using standard SQL by using Amazon Athena, Amazon Redshift Spectrum, and other tools such as Presto, Apache Hive, and Apache Spark. For more information, see Amazon S3 Inventory. | November 17, 2017 |
| Default encryption for S3 buckets | Amazon S3 default encryption provides a way to set the default encryption behavior for an S3 bucket. You can set default encryption on a bucket so that all objects are encrypted when they are stored in the bucket. The objects are encrypted using server-side encryption with either Amazon S3-managed keys (SSE-S3) or AWS KMS-managed keys (SSE-KMS). For more information, see Amazon S3 Default Encryption for S3 Buckets. | November 06, 2017 |
| Encryption status in Amazon S3 inventory | Amazon S3 now supports including encryption status in Amazon S3 inventory so you can see how your objects are encrypted at rest for compliance auditing or other purposes. You can also configure to encrypt S3 inventory with server-side encryption (SSE) or SSE-KMS so that all inventory files are encrypted accordingly. For more information, see Amazon S3 Inventory. | November 06, 2017 |
| Cross-Region replication (CRR) enhancements | Cross-Region replication now supports the following: [See the AWS documentation website for more details] | November 06, 2017 |
| Europe (London) Region | Amazon S3 is now available in the Europe (London) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | December 13, 2016 |
| Canada (Central) Region | Amazon S3 is now available in the Canada (Central) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | December 8, 2016 |
| Object tagging | Amazon S3 now supports object tagging. Object tagging enables you to categorize storage. Object key name prefixes also enable you to categorize storage, object tagging adds another dimension to it. There are added benefits tagging offers. These include: [See the AWS documentation website for more details] For more information, see Object Tagging. | November 29, 2016 |
| Amazon S3 lifecycle now supports tag-based filters | Amazon S3 now supports tag-based filtering in lifecycle configuration. You can now specify lifecycle rules in which you can specify a key prefix, one or more object tags, or a combination of both to select a subset of objects to which the lifecycle rule applies. For more information, see Object Lifecycle Management. | November 29, 2016 |
| CloudWatch request metrics for buckets | Amazon S3 now supports CloudWatch metrics for requests made on buckets. When you enable these metrics for a bucket, the metrics report at 1-minute intervals. You can also configure which objects in a bucket will report these request metrics. For more information, see Monitoring Metrics with Amazon CloudWatch. | November 29, 2016 |
| Amazon S3 Inventory | Amazon S3 now supports storage inventory. Amazon S3 inventory provides a flat-file output of your objects and their corresponding metadata on a daily or weekly basis for an S3 bucket or a shared prefix (that is, objects that have names that begin with a common string). For more information, see Amazon S3 Inventory. | November 29, 2016 |
| Amazon S3 Analytics – Storage Class Analysis | The new Amazon S3 analytics – storage class analysis feature observes data access patterns to help you determine when to transition less frequently accessed STANDARD storage to the STANDARD_IA (IA, for infrequent access) storage class. After storage class analysis observes the infrequent access patterns of a filtered set of data over a period of time, you can use the analysis results to help you improve your lifecycle policies. This feature also includes a detailed daily analysis of your storage usage at the specified bucket, prefix, or tag level that you can export to an S3 bucket. For more information, see Amazon S3 Analytics – Storage Class Analysis in the Amazon Simple Storage Service Developer Guide. | November 29, 2016 |
| New Expedited and Bulk data retrievals when restoring archived objects from S3 Glacier | Amazon S3 now supports Expedited and Bulk data retrievals in addition to Standard retrievals when restoring objects archived to S3 Glacier. For more information, see Restoring Archived Objects. | November 21, 2016 |
| CloudTrail object logging | CloudTrail supports logging Amazon S3 object level API operations such as GetObject, PutObject, and DeleteObject. You can configure your event selectors to log object level API operations. For more information, see Logging Amazon S3 API Calls Using AWS CloudTrail. | November 21, 2016 |
| US East (Ohio) Region | Amazon S3 is now available in the US East (Ohio) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | October 17, 2016 |
| IPv6 support for Amazon S3 Transfer Acceleration | Amazon S3 now supports Internet Protocol version 6 (IPv6) for Amazon S3 Transfer Acceleration. You can connect to Amazon S3 over IPv6 by using the new dual-stack for Transfer Acceleration endpoint. For more information, see Getting Started with Amazon S3 Transfer Acceleration. | October 6, 2016 |
| IPv6 support | Amazon S3 now supports Internet Protocol version 6 (IPv6). You can access Amazon S3 over IPv6 by using dual-stack endpoints. For more information, see Making Requests to Amazon S3 over IPv6. | August 11, 2016 |
| Asia Pacific (Mumbai) Region | Amazon S3 is now available in the Asia Pacific (Mumbai) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | June 27, 2016 |
| Amazon S3 Transfer Acceleration | Amazon S3 Transfer Acceleration enables fast, easy, and secure transfers of files over long distances between your client and an S3 bucket. Transfer Acceleration takes advantage of Amazon CloudFront’s globally distributed edge locations. For more information, see Amazon S3 Transfer Acceleration. | April 19, 2016 |
| Lifecycle support to remove expired object delete markers | Lifecycle configuration Expiration action now allows you to direct Amazon S3 to remove expired object delete markers in a versioned bucket. For more information, see Elements to Describe Lifecycle Actions. | March 16, 2016 |
| Bucket lifecycle configuration now supports action to abort incomplete multipart uploads | Bucket lifecycle configuration now supports the AbortIncompleteMultipartUpload action that you can use to direct Amazon S3 to abort multipart uploads that don't complete within a specified number of days after being initiated. When a multipart upload becomes eligible for an abort operation, Amazon S3 deletes any uploaded parts and aborts the multipart upload. For conceptual information, see the following topics in the Amazon Simple Storage Service Developer Guide: [See the AWS documentation website for more details] The following API operations have been updated to support the new action: [See the AWS documentation website for more details] | March 16, 2016 |
| Asia Pacific (Seoul) Region | Amazon S3 is now available in the Asia Pacific (Seoul) Region. For more information about Amazon S3 Regions and endpoints, see Regions and Endpoints in the AWS General Reference. | January 6, 2016 |
| New condition key and a Multipart Upload change | IAM policies now support an Amazon S3 s3:x-amz-storage-class condition key. For more information, see Specifying Conditions in a Policy. You no longer need to be the initiator of a multipart upload to upload parts and complete the upload. For more information, see Multipart Upload API and Permissions. | December 14, 2015 |
| Renamed the US Standard Region | Changed the Region name string from "US Standard" to "US East (N. Virginia)." This is only a Region name update, there is no change in the functionality. | December 11, 2015 |
| New storage class | Amazon S3 now offers a new storage class, STANDARD_IA (IA, for infrequent access) for storing objects. This storage class is optimized for long-lived and less frequently accessed data. For more information, see Amazon S3 Storage Classes. Lifecycle configuration feature updates now allow you to transition objects to the STANDARD_IA storage class. For more information, see Object Lifecycle Management. Previously, the cross-Region replication feature used the storage class of the source object for object replicas. Now, when you configure cross-Region replication you can specify a storage class for the object replica created in the destination bucket. For more information, see Replication. | September 16, 2015 |
| AWS CloudTrail integration | New AWS CloudTrail integration allows you to record Amazon S3 API activity in your S3 bucket. You can use CloudTrail to track S3 bucket creations or deletions, access control modifications, or lifecycle policy changes. For more information, see Logging Amazon S3 API Calls Using AWS CloudTrail. | September 1, 2015 |
| Bucket limit increase | Amazon S3 now supports bucket limit increases. By default, customers can create up to 100 buckets in their AWS account. Customers who need additional buckets can increase that limit by submitting a service limit increase. For information about how to increase your bucket limit, go to AWS Service Limits in the AWS General Reference. For more information, see Creating a Bucket and Bucket Restrictions and Limitations. | August 4, 2015 |
| Consistency model update | Amazon S3 now supports read-after-write consistency for new objects added to Amazon S3 in the US East (N. Virginia) Region. Prior to this update, all Regions except US East (N. Virginia) Region supported read-after-write consistency for new objects uploaded to Amazon S3. With this enhancement, Amazon S3 now supports read-after-write consistency in all Regions for new objects added to Amazon S3. Read-after-write consistency allows you to retrieve objects immediately after creation in Amazon S3. For more information, see Regions. | August 4, 2015 |
| Event notifications | Amazon S3 event notifications have been updated to add notifications when objects are deleted and to add filtering on object names with prefix and suffix matching. For more information, see Configuring Amazon S3 Event Notifications. | July 28, 2015 |
| Amazon CloudWatch integration | New Amazon CloudWatch integration allows you to monitor and set alarms on your Amazon S3 usage through CloudWatch metrics for Amazon S3. Supported metrics include total bytes for standard storage, total bytes for reduced-redundancy storage, and total number of objects for a given S3 bucket. For more information, see Monitoring Metrics with Amazon CloudWatch. | July 28, 2015 |
| Support for deleting and emptying non-empty buckets | Amazon S3 now supports deleting and emptying non-empty buckets. For more information, see Deleting or Emptying a Bucket. | July 16, 2015 |
| Bucket policies for Amazon VPC endpoints | Amazon S3 has added support for bucket policies for Amazon Virtual Private Cloud (Amazon VPC) endpoints. You can use S3 bucket policies to control access to buckets from specific Amazon VPC endpoints, or specific VPCs. VPC endpoints are easy to configure, are highly reliable, and provide a secure connection to Amazon S3 without requiring a gateway or a NAT instance. For more information, see Example Bucket Policies for VPC Endpoints for Amazon S3. | April 29, 2015 |
| Event notifications | Amazon S3 event notifications have been updated to support the switch to resource-based permissions for AWS Lambda functions. For more information, see Configuring Amazon S3 Event Notifications. | April 9, 2015 |
| Cross-Region replication | Amazon S3 now supports cross-Region replication. Cross-Region replication is the automatic, asynchronous copying of objects across buckets in different AWS Regions. For more information, see Replication. | March 24, 2015 |
| Event notifications | Amazon S3 now supports new event types and destinations in a bucket notification configuration. Prior to this release, Amazon S3 supported only the s3:ReducedRedundancyLostObject event type and an Amazon SNS topic as the destination. For more information about the new event types, see Configuring Amazon S3 Event Notifications. | November 13, 2014 |
| Server-side encryption with customer-provided encryption keys | Server-side encryption with AWS Key Management Service (AWS KMS) Amazon S3 now supports server-side encryption using AWS KMS. This feature allows you to manage the envelope key through AWS KMS, and Amazon S3 calls AWS KMS to access the envelope key within the permissions you set. For more information about server-side encryption with AWS KMS, see Protecting Data Using Server-Side Encryption with AWS Key Management Service. | November 12, 2014 |
| Europe (Frankfurt) Region | Amazon S3 is now available in the Europe (Frankfurt) Region. | October 23, 2014 |
| Server-side encryption with customer-provided encryption keys | Amazon S3 now supports server-side encryption using customer-provided encryption keys (SSE-C). Server-side encryption enables you to request Amazon S3 to encrypt your data at rest. When using SSE-C, Amazon S3 encrypts your objects with the custom encryption keys that you provide. Since Amazon S3 performs the encryption for you, you get the benefits of using your own encryption keys without the cost of writing or executing your own encryption code. For more information about SSE-C, see Server-Side Encryption (Using Customer-Provided Encryption Keys). | June 12, 2014 |
| Lifecycle support for versioning | Prior to this release, lifecycle configuration was supported only on nonversioned buckets. Now you can configure lifecycle on both nonversioned and versioning-enabled buckets. For more information, see Object Lifecycle Management. | May 20, 2014 |
| Access control topics revised | Revised Amazon S3 access control documentation. For more information, see Identity and Access Management in Amazon S3. | April 15, 2014 |
| Server access logging topic revised | Revised server access logging documentation. For more information, see Amazon S3 Server Access Logging. | November 26, 2013 |
| .NET SDK samples updated to version 2.0 | .NET SDK samples in this guide are now compliant to version 2.0. | November 26, 2013 |
| SOAP Support Over HTTP Deprecated | SOAP support over HTTP is deprecated, but it is still available over HTTPS. New Amazon S3 features will not be supported for SOAP. We recommend that you use either the REST API or the AWS SDKs. | September 20, 2013 |
| IAM policy variable support | The IAM access policy language now supports variables. When a policy is evaluated, any policy variables are replaced with values that are supplied by context-based information from the authenticated user’s session. You can use policy variables to define general purpose policies without explicitly listing all the components of the policy. For more information about policy variables, see IAM Policy Variables Overview in the IAM User Guide. For examples of policy variables in Amazon S3, see User Policy Examples. | April 3, 2013 |
| Console support for Requester Pays | You can now configure your bucket for Requester Pays by using the Amazon S3 console. For more information, see Configure Requester Pays by Using the Amazon S3 Console. | December 31, 2012 |
| Root domain support for website hosting | Amazon S3 now supports hosting static websites at the root domain. Visitors to your website can access your site from their browser without specifying "www" in the web address (e.g., "example.com"). Many customers already host static websites on Amazon S3 that are accessible from a "www" subdomain (e.g., "www.example.com"). Previously, to support root domain access, you needed to run your own web server to proxy root domain requests from browsers to your website on Amazon S3. Running a web server to proxy requests introduces additional costs, operational burden, and another potential point of failure. Now, you can take advantage of the high availability and durability of Amazon S3 for both "www" and root domain addresses. For more information, see Hosting a Static Website on Amazon S3. | December 27, 2012 |
| Console revision | Amazon S3 console has been updated. The documentation topics that refer to the console have been revised accordingly. | December 14, 2012 |
| Support for Archiving Data to S3 Glacier | Amazon S3 now supports a storage option that enables you to utilize S3 Glacier's low-cost storage service for data archival. To archive objects, you define archival rules identifying objects and a timeline when you want Amazon S3 to archive these objects to S3 Glacier. You can easily set the rules on a bucket using the Amazon S3 console or programmatically using the Amazon S3 API or AWS SDKs. For more information, see Object Lifecycle Management. | November 13, 2012 |
| Support for Website Page Redirects | For a bucket that is configured as a website, Amazon S3 now supports redirecting a request for an object to another object in the same bucket or to an external URL. For more information, see (Optional) Configuring a Webpage Redirect. For information about hosting websites, see Hosting a Static Website on Amazon S3. | October 4, 2012 |
| Support for Cross-Origin Resource Sharing (CORS) | Amazon S3 now supports Cross-Origin Resource Sharing (CORS). CORS defines a way in which client web applications that are loaded in one domain can interact with or access resources in a different domain. With CORS support in Amazon S3, you can build rich client-side web applications on top of Amazon S3 and selectively allow cross-domain access to your Amazon S3 resources. For more information, see Cross-Origin Resource Sharing (CORS). | August 31, 2012 |
| Support for Cost Allocation Tags | Amazon S3 now supports cost allocation tagging, which allows you to label S3 buckets so you can more easily track their cost against projects or other criteria. For more information about using tagging for buckets, see Using Cost Allocation S3 Bucket Tags. | August 21, 2012 |
| Support for MFA-protected API access in bucket policies | Amazon S3 now supports MFA-protected API access, a feature that can enforce AWS Multi-Factor Authentication for an extra level of security when accessing your Amazon S3 resources. It is a security feature that requires users to prove physical possession of an MFA device by providing a valid MFA code. For more information, go to AWS Multi-Factor Authentication. You can now require MFA authentication for any requests to access your Amazon S3 resources. To enforce MFA authentication, Amazon S3 now supports the aws:MultiFactorAuthAge key in a bucket policy. For an example bucket policy, see Adding a Bucket Policy to Require MFA. | July 10, 2012 |
| Object Expiration support | You can use Object Expiration to schedule automatic removal of data after a configured time period. You set object expiration by adding lifecycle configuration to a bucket. | 27 December 2011 |
| New Region supported | Amazon S3 now supports the South America (São Paulo) Region. For more information, see Accessing a Bucket. | December 14, 2011 |
| Multi-Object Delete | Amazon S3 now supports Multi-Object Delete API that enables you to delete multiple objects in a single request. With this feature, you can remove large numbers of objects from Amazon S3 more quickly than using multiple individual DELETE requests. For more information, see Deleting Objects. | December 7, 2011 |
| New Region supported | Amazon S3 now supports the US West (Oregon) Region. For more information, see Buckets and Regions. | November 8, 2011 |
| Documentation Update | Documentation bug fixes. | November 8, 2011 |
| Documentation Update | In addition to documentation bug fixes, this release includes the following enhancements: [See the AWS documentation website for more details] | October 17, 2011 |
| Server-side encryption support | Amazon S3 now supports server-side encryption. It enables you to request Amazon S3 to encrypt your data at rest, that is, encrypt your object data when Amazon S3 writes your data to disks in its data centers. In addition to REST API updates, the AWS SDK for Java and .NET provide necessary functionality to request server-side encryption. You can also request server-side encryption when uploading objects using AWS Management Console. To learn more about data encryption, go to Using Data Encryption. | October 4, 2011 |
| Documentation Update | In addition to documentation bug fixes, this release includes the following enhancements: [See the AWS documentation website for more details] | September 22, 2011 |
| Support for sending requests using temporary security credentials | In addition to using your AWS account and IAM user security credentials to send authenticated requests to Amazon S3, you can now send requests using temporary security credentials you obtain from AWS Identity and Access Management (IAM). You can use the AWS Security Token Service API or the AWS SDK wrapper libraries to request these temporary credentials from IAM. You can request these temporary security credentials for your own use or hand them out to federated users and applications. This feature enables you to manage your users outside AWS and provide them with temporary security credentials to access your AWS resources. For more information, see Making Requests. For more information about IAM support for temporary security credentials, see Temporary Security Credentials in the IAM User Guide. | August 3, 2011 |
| Multipart Upload API extended to enable copying objects up to 5 TB | Prior to this release, Amazon S3 API supported copying objects of up to 5 GB in size. To enable copying objects larger than 5 GB, Amazon S3 now extends the multipart upload API with a new operation, Upload Part (Copy). You can use this multipart upload operation to copy objects up to 5 TB in size. For more information, see Copying Objects. For conceptual information about multipart upload API, see Uploading Objects Using Multipart Upload API. | June 21, 2011 |
| SOAP API calls over HTTP disabled | To increase security, SOAP API calls over HTTP are disabled. Authenticated and anonymous SOAP requests must be sent to Amazon S3 using SSL. | June 6, 2011 |
| IAM enables cross-account delegation | Previously, to access an Amazon S3 resource, an IAM user needed permissions from both the parent AWS account and the Amazon S3 resource owner. With cross-account access, the IAM user now only needs permission from the owner account. That is, If a resource owner grants access to an AWS account, the AWS account can now grant its IAM users access to these resources. For more information, see Creating a Role to Delegate Permissions to an IAM User in the IAM User Guide. For more information on specifying principals in a bucket policy, see Specifying a Principal in a Policy. | June 6, 2011 |
| New link | This service's endpoint information is now located in the AWS General Reference. For more information, go to Regions and Endpoints in AWS General Reference. | March 1, 2011 |
| Support for hosting static websites in Amazon S3 | Amazon S3 introduces enhanced support for hosting static websites. This includes support for index documents and custom error documents. When using these features, requests to the root of your bucket or a subfolder (e.g., http://mywebsite.com/subfolder) returns your index document instead of the list of objects in your bucket. If an error is encountered, Amazon S3 returns your custom error message instead of an Amazon S3 error message. For more information, see Hosting a Static Website on Amazon S3. | February 17, 2011 |
| Response Header API Support | The GET Object REST API now allows you to change the response headers of the REST GET Object request for each request. That is, you can alter object metadata in the response, without altering the object itself. For more information, see Getting Objects. | January 14, 2011 |
| Large object support | Amazon S3 has increased the maximum size of an object you can store in an S3 bucket from 5 GB to 5 TB. If you are using the REST API you can upload objects of up to 5 GB size in a single PUT operation. For larger objects, you must use the Multipart Upload REST API to upload objects in parts. For more information, see Uploading Objects Using Multipart Upload API. | December 9, 2010 |
| Multipart upload | Multipart upload enables faster, more flexible uploads into Amazon S3. It allows you to upload a single object as a set of parts. For more information, see Uploading Objects Using Multipart Upload API. | November 10, 2010 |
| Canonical ID support in bucket policies | You can now specify canonical IDs in bucket policies. For more information, see Access Policy Language Overview | September 17, 2010 |
| Amazon S3 works with IAM | This service now integrates with AWS Identity and Access Management (IAM). For more information, go to AWS Services That Work with IAM in the IAM User Guide. | September 2, 2010 |
| Notifications | The Amazon S3 notifications feature enables you to configure a bucket so that Amazon S3 publishes a message to an Amazon Simple Notification Service (Amazon SNS) topic when Amazon S3 detects a key event on a bucket. For more information, see Setting Up Notification of Bucket Events. | July 14, 2010 |
| Bucket policies | Bucket policies is an access management system you use to set access permissions across buckets, objects, and sets of objects. This functionality supplements and in many cases replaces access control lists. For more information, see Using Bucket Policies and User Policies. | July 6, 2010 |
| Path-style syntax available in all Regions | Amazon S3 now supports the path-style syntax for any bucket in the US Classic Region, or if the bucket is in the same Region as the endpoint of the request. For more information, see Virtual Hosting. | June 9, 2010 |
| New endpoint for Europe (Ireland) | Amazon S3 now provides an endpoint for Europe (Ireland): http://s3-eu-west-1.amazonaws.com. | June 9, 2010 |
| Console | You can now use Amazon S3 through the AWS Management Console. You can read about all of the Amazon S3 functionality in the console in the Amazon Simple Storage Service Console User Guide. | June 9, 2010 |
| Reduced Redundancy | Amazon S3 now enables you to reduce your storage costs by storing objects in Amazon S3 with reduced redundancy. For more information, see Reduced Redundancy Storage. | May 12, 2010 |
| New Region supported | Amazon S3 now supports the Asia Pacific (Singapore) Region. For more information, see Buckets and Regions. | April 28, 2010 |
| Object Versioning | This release introduces object versioning. All objects now can have a key and a version. If you enable versioning for a bucket, Amazon S3 gives all objects added to a bucket a unique version ID. This feature enables you to recover from unintended overwrites and deletions. For more information, see Versioning and Using Versioning. | February 8, 2010 |
| New Region supported | Amazon S3 now supports the US West (N. California) Region. The new endpoint for requests to this Region is s3-us-west-1.amazonaws.com. For more information, see Buckets and Regions. | December 2, 2009 |
| AWS SDK for .NET | AWS now provides libraries, sample code, tutorials, and other resources for software developers who prefer to build applications using .NET language-specific API operations instead of REST or SOAP. These libraries provide basic functions (not included in the REST or SOAP APIs), such as request authentication, request retries, and error handling so that it's easier to get started. For more information about language-specific libraries and resources, see Using the AWS SDKs, CLI, and Explorers. | November 11, 2009 |