AWS Lambda costs $0.37 for 1,000,000 requests executed for 100ms with 128MB of RAM. You only pay when your Lambda function runs, and billed by the millisecond.
S3 pricing starts at $0.023/GB for S3 Standard storage class, use this S3 pricing calculator to get AWS S3 cost based on file size and number of upload/downloads.
DynamoDB costs $0.125 per 1,000,000 writes, and $0.13 per 1,000,000 reads. Pricing is calculated based on RCU (Read Capacity Unit) and WCU (Write Capacity Unit).
Calculate Amazon RDS database costs by selecting database engine (Postgres, MySQL, Microsoft SQL Server), Memory (RAM) and storage you need.
EC2 instance costs $3.07/month for 0.5GB of RAM with 2vCPU. 3 year Reserved Instance plan offers a lower pricing at $1.31/month for the same instance.
Calculate your Amazon API Gateway costs by entering how many requests your application will get, and the payload size of your incoming and outgoing requests.
Elasticache is a fully managed redis and memcache service, you select the memory (RAM) you need to get an estimated cost of elasticache.
Is sending mails cheap? Calculate AWS SES emailing cost with this simple calculator based on the number of emails you send / receive, attachments and metrics.
Calculate AWS Fargate costs (serverless containers) by just putting how much CPU and RAM you need, and selecting the architecture and storage.