Azure Repos default branch name

Introduced the ability to choose the initial branch name for new repositories in Azure DevOps projects, allowing project owners with 'Edit policies' permission to set a default branch name other than 'master'. If no choice is made, Azure DevOps will use a fallback default, which is planned to switch from 'master' to 'main' in early September 2020. The post also provides advice for existing repositories on how to change their default branch name, considering downstream impacts like pipelines, pull requests, and clones.