Use [Hasura](https://hasura.io/), an open source GraphQL engine to setup a backend.

You need to have Docker installed. You can [install](https://docs.docker.com/install/) from the Docker website.

Set up a GraphQL Backend with Hasura and Docker

Use a GUI to create a Postgres table for your GraphQL engine and add some test data to it.

Add a Postgres Database Table to a Hasura GraphQL Backend 

Create a [Serverless Function](https://azure.microsoft.com/en-us/services/functions/?WT.mc_id=egghead-screencast-chnwamba) and test it locally.

Configure and Use a Azure Serverless Function

In this lesson, we'll extend our User table mutation to accept username and password arguments. Then we'll intercept this mutation with the serverless function that we have set up.

Extend a Mutation with a Azure serverless function with GraphQL Actions

Intercept requests from a GraphQL mutation using a [Serverless Function](https://azure.microsoft.com/en-us/services/functions/?WT.mc_id=egghead-screencast-chnwamba). Use this function to encrypt user's passwords before persisting them to the database.

How to Extend a GraphQL API

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