# Concurrency & Parallel Runs DeviceCloud supports parallel runs, also known as concurrency. This means multiple tests run simultaneously, greatly reducing the overall test suite execution time for a given CI run. In your DeviceCloud settings page, you'll see two values for each platform: minimum guaranteed concurrency (known as **Concurrency Protection**) and maximum concurrency. Cheaper plans typically have no Concurrency Protection, which means that during busy periods when runner capacity is stretched, you may need to wait for runner availability or experience less concurrency than your maximum. Once you reach your maximum concurrency for iOS or Android, additional tests enter a queued state and sit in a backlog until you're under your concurrency limits. At that point, they automatically move to pending and are processed by the runners. If you have a plan with Concurrency Protection, DeviceCloud will prioritise your jobs to ensure your minimum concurrency is met. Note that concurrency guarantees only apply to standard runner types. Experimental runner types, such as Android's M1 runner, are not covered by these concurrency rules. #### **Enterprise Plans** If you need larger guaranteed concurrency or a bespoke concurrency setup and availability, please contact us at and we'd be happy to arrange an enterprise plan that meets your requirements. #### **Why limit concurrency at all?** DeviceCloud owns its own hardware, which is how we're able to offer such competitive prices. However, we have limited capacity in our runner pool. As such, we sometimes need to limit concurrency to ensure fair throughput for everyone. As more users subscribe, we gradually invest in and expand this pool to increase overall capacity. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.devicecloud.dev/getting-started/concurrency-and-parallel-runs.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.