Azure DevTest Labs Pricing Overview

Unmetered plans allow unlimited testing and remote access starting at $250 per month. Unmetered pricing is based on the number of device slots you purchase for each usage type (i.e. automated test or remote access) and device family (i.e. Android or iOS) and are priced at $250 per slot per month. Slots are not tied to a specific device make or model. Device slots correspond to concurrency. For instance, if you purchase ten automated test Android device slots and schedule a run on 100 Android devices, Device Farm will execute your tests on up to ten devices at a time until all tests are completed on your selected devices. Regardless of how many tests or remote access sessions you have in a month, you are billed at the flat rate of $250 per device slot per month.

For individuals or a small team of 3 or less to start testing APIs.