Microsoft DocumentDB API is available in the Azure portal. First you must sign up for an Azure subscription. Once you sign up for an Azure subscription, you can add DocumentDB API container to your Azure subscription. For instructions on adding an Azure Cosmos DB account, see Create an Azure Cosmos DB database account. If you had a DocumentDB account in the past, you now have an Azure Cosmos DB account. SDKs are available for .NET, Python, Node.js, JavaScript, and Java. Developers can also use the RESTful HTTP APIs to interact with Azure Cosmos DB resources from various platforms and languages.