I was looking for a way to update COSMOS DB document after receive a request inside Azure Function without any COSMOS DB biding. I didn't find a way !! I took another way. I don't know if it is the right or wrong way. But this way works for me. Scenario is very simple. We have sales orders arriving into the data base. We have another Azure function to insert those new orders. But suppose we need to cancel some order. How to do that using Azure Function ? Let´s start !!! Step 1. Sample Collection. This collection is very simple, we are focused on results. Step 2. Create a Function and Select HttpTrigger template. Step 3. Code More code. Step 4. Test Step 5. Results See you soon