You write and organize your code in Lambda functions, which are the basic building blocks you use to create a Lambda application. You control security and access through Lambda permissions, using execution roles to manage what AWS services your functions can interact with and what resource policies can interact with your code. Run Code Without Provisioning or Managing Infrastructure With AWS Lambda . Sign Up Today. Get started with AWS Lambda for Free. Run code for virtually any type of application. Tight Integration with the AWS Ecosystem: Lambda is the glue that can connect dozens of AWS services. You can trigger functions from services like S3, API Gateway, DynamoDB, SQS, Kinesis, and more. Learn the basics of AWS Lambda , how to set up your first function, and how to integrate it with core AWS services for application serverless deployment.