Serverless Lambda Function AWS
What is Serverless?
Serverless is a term that generally refers to serverless applications.
Serverless applications are ones that don’t need any server provision and do not require to manage servers.
AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services.
It is a computing service that runs code in response to events and automatically manages the computing resources required by that code.
It was introduced in November 2014.
In AWS Lambda the code is executed based on the response of events in AWS services such as add/delete files in S3 bucket, HTTP request from Amazon API gateway, etc.
However, Amazon Lambda can only be used to execute background tasks.
AWS Lambda function helps you to focus on your core product and business logic instead of managing operating system (OS) access control, OS patching, right-sizing, provisioning, scaling, etc.
When building Serverless applications, AWS Lambda is one of the main candidates for running the application code.
Typically, to complete a Serverless stack you’ll need:
- Computing service
- Database service
- HTTP gateway service
Lambda fills the primary role of the compute service on AWS.
It also integrates with many other AWS services and, together with API Gateway, DynamoDB and RDS, forms the basis for Serverless solutions for those using AWS.
Lambda supports many of the most popular languages and runtimes, so it’s a good fit for a wide range of Serverless developers.