On passing the DP-420 exam, you will earn the Microsoft Certified Azure Cosmos DB Developer Specialty certification, which will enable you to become an Azure Cosmos DB Developer. Employers will require your skills because you will be able to understand how to implement and manage the operational aspects of cloud-native and hybrid data platform solutions built with Azure Cosmos DB and Microsoft Azure Data Services. As an Azure Cosmos DB developer, your responsibilities could include design and implementation of data models and data distribution.