AWS is providing 12 month free usage tier, according to AWS website, The Free Usage Tier can be used for anything you want to run in the cloud: launch new applications, test existing applications in the cloud, or simply gain hands-on experience with AWS.
Details on AWS Free Usage Tier (Per Month):
Elastic Compute Cloud (EC2)
- 750 hours of Amazon EC2 Linux/UNIX or RHEL
†Micro Instance usage (613 MB of memory and 32-bit and 64-bit platform support) – enough hours to run continuously each month* - 750 hours of Amazon EC2 Microsoft Windows Server
‡Micro Instance usage (613 MB of memory and 32-bit and 64-bit platform support) – enough hours to run continuously each month* - 750 hours of an Elastic Load Balancer plus 15 GB data processing*
- 30 GB of Amazon Elastic Block Storage, plus 2 million I/Os and 1 GB of snapshot storage
*
Simple Storage Service (S3)
- 5 GB of Amazon S3 standard storage, 20,000 Get Requests, and 2,000 Put Requests
*
DynamoDB
- 100 MB of storage, 5 units of write capacity, and 10 units of read capacity for Amazon DynamoDB.**
Relational Database Service (RDS)
- 750 hours of Amazon RDS Single-AZ Micro DB Instances, for running MySQL, Oracle BYOL or SQL Server (running SQL Server Express Edition) – enough hours to run a DB Instance continuously each month
* - 20 GB of database storage
- 10 million I/Os
- 20 GB of backup storage for your automated database backups and any user-initiated DB Snapshots
Simple Workflow (SWF)
- 1,000 Amazon SWF workflow executions can be initiated for free. A total of 10,000 activity tasks, signals, timers and markers, and 30,000 workflow-days can also be used for free
**
Simple Queue Service (SQS) and Simple Notification Service (SNS)
- 1,000,000 Requests of Amazon Simple Queue Service
** - 1,000,000 Requests, 100,000 HTTP notifications and 1,000 email notifications for Amazon Simple Notification Service
**
Amazon Elastic Transcoder
- 20 minutes of SD transcoding or 10 minutes of HD transcoding
**
CloudWatch
- 10 Amazon Cloudwatch metrics, 10 alarms, and 1,000,000 API requests
**
Data Transfer
- 15 GB of bandwidth out aggregated across all AWS services
*
Data Pipeline
- 3 low frequency preconditions running on AWS per month*
- 5 low frequency activities running on AWS per month*
ElastiCache
- 750 hours of Amazon ElastiCache – enough hours to run a Cache Node continuously each month.
*
For more on terms and conditions check here