14. Serverless functions

Serverless computing and serverless functions have gained tremendous traction over the past few years due to scalability and reduced management overhead. Cloud services such as Azure Functions, AWS Lambda, and GCP Cloud Run have made it very easy for users to run their code as serverless functions.

The word serverless refers to any solution where you don't need to manage servers. Serverless functions refer to a subset of serverless computing where you can run your code as a function on-demand. This means that your code in the function will only run and be executed when there is a demand. This architectural style is called event-driven architecture. In an event-driven architecture, the event consumers are triggered when there is an event. In the case of serverless functions, the event consumers will be these serverless functions. An event can be anything from a message in a queue to a new object uploaded to storage, or even an HTTP ...