Creating a Web API with Azure Functions, Azure Cosmos DB MongoDB API and C#

In this tutorial, we’ll build a Web API using Azure Functions that stores data in Azure Cosmos DB with MongoDB API in C#

Azure Cosmos DB is a globally distributed, multi-model, NoSQL database service that allows us to build highly available and scalable applications. Cosmos DB supports applications that use Document model data through it’s SQL API and MongoDB API.

I’ve been meaning to produce more content on Cosmos DB’s Mongo API, so in this article, I’m going to be developing a Serverless API in Azure Functions that uses a Cosmos DB MongoDB API account. This article has been loosely based on this fantastic tutorial on creating a Web API with ASP.NET Core and MongoDB.

By the end of this article, you’ll know how to create a Cosmos DB account that uses the MongoDB API. You’ll also know how to create a simple CRUD Web API in C# that interacts with a Mongo DB API account.

If you want to see the whole code before diving into the article, you can check it out on my GitHub: