--Amazon S3 to store and retrieve objects at any scale.
--Amazon SQS to read from and write to message queues.
--Amazon SNS to generate and process notifications to mobile devices and other distributed services.
--Amazon DynamoDB to store and retrieve any amount of data, at any access rate.
Moreover, developers can create and populate S3 buckets, manage message queues, create, populate and query DynamoDB tables, and more, Barr said.
In related news, AWS also announced fine-grained access control for DynamoDB.
DynamoDB is Amazon's fast, managed NoSQL database service that makes it simple and cost-effective to store and retrieve any amount of data, and serve any level of request traffic, the company said. All data items are stored on solid-state drives (SSDs), and are replicated across three AWS Availability Zones for high availability and durability.
"Many developers are building mobile apps and online games using DynamoDB, he said. "Apps of this type can benefit from DynamoDB's scalability, flexibility and efficiency. These apps generally use a single table to store information for the entire user base, which can easily grow to the millions or tens of millions of users. This scenario requires the use of a proxy tier between the app and DynamoDB in order to handle authentication and authorization."
The proxy introduces additional latency and complexity, not to mention the added expense, he said.
To make it easier for developers to implement the use case that Barr described, AWS launched Fine-Grained Access Control for DynamoDB. Developers can now use AWS Identity and Access Management (IAM) policies to regulate access to items and attributes stored in DynamoDB tables, without the need for a middle-tier proxy, Barr said.
In addition, Barr listed some things developers can build using fine-grained access control:
1. A mobile app that displays information for nearby airports, based on the user's location: The app can access and display attributes such as airline names, arrival times and flight numbers. However, it cannot access or display pilot names or passenger counts.
2. A mobile game that stores high scores for all users in a single table: Each user can update his or her own scores but has no access to the other ones.