What is a AWS Lambda?

AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). Users of AWS Lambda create functions, self-contained applications written in one of the supported languages and runtimes, and upload them to AWS Lambda, which executes those functions in an efficient and flexible manner.

What Are Lambdas Functions?

AWS lambda are server-less compute functions are fully managed by the AWS where developers can run there code without worrying about servers.AWS lambda functions will allow you to run the code with out provisioning or managing servers.

Best practices

Following DevSecOps practices can help end-users to use and secure Lambda-based applications more effectively. In Lambda-based applications, the line between the infrastructure and business logic is blurred and the apps are usually spread across various services.

How AWS Lambda Works?

As the go-to serverless computing platform for AWS web services, Lambda offers a powerful platform for developers to create and run complex cloud-based applications.

Lambda also integrates with other web services in the AWS ecosystem seamlessly so you can have all the options you need to create large, secure, flexible, and cost-efficient applications in the cloud.

What Is Provisioned Concurrency?

If you are attempting to use Lambda for a use case that is latency-sensitive, cold starts are likely to be your main concern. A cold start is the time required for a Lambda function container to start up, before it can start serving function invocations. During that time, the function is not accessible and users may experience slowdown or service failure.

Execution Model

The container (and the resources used by it) that runs our function is managed completely by AWS. It is brought up when an event takes place and is turned off if it is not being used. If additional requests are made while the original event is being served, a new container is brought up to serve a request. This means that if we are undergoing a usage spike, the cloud provider simply creates multiple instances of the container with our function to serve those requests.

Smart budgeting with AWS Lambda

With AWS Lambda's serverless architecture and on-demand, auto-scaling features can grow or shrink network resources to match your traffic needs, all with no user intervention. This offers savings in potential compute overhead, pricing according to the total number of requests and the amount of actual memory used in 100ms billing units. This ensures you only pay for the amount of time you use.