Custom API Command-line / Shell
DocumentDB can be accessed using a Mongo shell to create, read, update and delete documents. It can also be accessed programmatically using the MongoDB drivers for Python, Node.js, PHP, Go, Java, and C#.
Within a single document, a write operation to a DocumentDB cluster is atomic. A read operation returns only data that was durable before the query execution started, and does not return any data that was modified after. Dirty reads are not possible.