It is a schema-less JSON documents database engine with rich SQL querying capabilities. We will go over Cosmos database, collections, documents creation, and stored procedures. Then we cover CosmosDB's SQL API and how it supports relational and hierarchical queries. Finally we will cover working with CosmosDB through Azure portal and SQL API using .Net code. You will walk away with what Azure CosmosDB is and what are some of the use cases, how to set it up and do some basic querying and how to connect to .Net API to do more advanced coding.