# Azure Cosmos DB

This tutorial explains what is an Azure Cosmos DB and how we can create an Azure Cosmos DB.

Azure Cosmos DB is a fully managed NoSQL and relational database service for building scalable, globally distributed, high performance applications.

Azure Cosmos DB is a layer of abstraction over some database engines. These database engines are shown in the following picture:

If we need to create an Azure Cosmos DB for PostgreSQL database we need to follow the following steps:

• From Azure Portal, go to "All services" -> "Databases"

  

• Click on "Azure Cosmos DB"

  

• Click on "+Create"

  

• Click on "Create" for Azure Cosmos DB for PostgreSQL

• Choose the subscription and the resource group you want to create the Azure Cosmos DB for PostgreSQL in. Choose the Cluster name, a location and Azure Cosmos DB for PostgreSQL, the type, the number and the power of each node of the database cluster.

• Choose the PostgreSQL version, Administrator account credentials and click on "Next: Networking >".

  

  

• Choose Connectivity method and Firewall rules.

• I will not add tags. So I will click on "Review + Create" and after that "Create" button.

After a while, the Azure Cosmos DB for PostgreSQL is created.