Serverless computing has become one of the most popular platforms for build cloud native applications. Attend this talk if you like to understand what is serverless computing, event driven architecture and how the two are related. I will compare serverless Azure Functions and Cosmos DB to traditional API and SQL development. You will understand the challenges of using traditional development technologies and patterns and the advantages of serverless to build true cloud native applications. We will talk through lessons learned and see how the simple deployment can scale to global distributed solution. This talk will be focused on Azure but the concepts easily map to the solutions found in other cloud providers.