A merge queue is a structured way to manage the merging workflow for a GitHub repository, enabling pull requests to be lined up and automatically merged by a bot or app after passing required status checks. This automates tasks such as updating outdated pull requests, resolving rebasing or merge conflicts, ensuring compatible changes, and preventing broken builds. To use a merge queue effectively, one must set up the right CI triggers and decide on other factors that affect its operation, including concurrency level, failure handling, timeouts, merging limits, and more. This can be achieved with tools like Aviator MergeQueue, which automates tedious developer workflows by managing git Pull Requests and continuous integration test runs to help teams avoid broken builds and streamline cumbersome merge processes.