AWS Classroom Series – 24/Jun/2020

Scenario: Application

  • Customer: I have an application which should be running on the cloud. The application is very specific and not used all the time (approximately used 4 hours (average) in a day). I want to know the hosting options in aws

  • Customer problem statement: I want to be billed/charged only when my application is used by customers

  • This is where Serverless will be handy.

  • Serverless technology internally will provision servers when the code (written as functions) is called.

  • This technology will help you to be charged/billed only when your code is being called.

  • In AWS, Serverless can be used in a Service called as AWS Lambda

  • Different Languages where AWS Lambda can be written

    • Node.js
    • Python
    • Ruby
    • Java
    • Go
    • C#
    • Powershell
  • Advantages:

    • You pay only for the compute time you consume
    • Code is executed only when need and scales automatically
  • Disadvantages:

    • No standards (Portability is difficult)
  • Scenarios:

    • Infrequently used appications on web
    • backend jobs
    • automation
  • Walkthrough: Preview Preview Preview Preview Preview Preview Preview

  • Usecases:

    • Auto-scaling APIs
    • Event Streaming
    • Image and Video Processing
    • Multi language applications


  1. Function: function is a code that processes events which can be be invoked.
  2. Runtime: Runtime allowes functions in different languages to run in the execution environment.
  3. Event: An event is a Json formatted document that contains data for function to be processed
  4. Trigger: A trigger is a configuration or a resource which invokes lambda function


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