What is app hub?

App Hub is a platform created by Microsoft for developers to manage their Windows Phone and Xbox Live Indie Games projects. It allows developers to submit their applications and games for review and publication on the Windows Phone Marketplace and Xbox Live Marketplace. App Hub provides developers with tools for managing their projects, accessing technical resources, and interacting with the community of other developers. It also provides resources for marketing and promoting apps and games. Developers can sign up for App Hub and gain access to a wealth of resources and support for creating and publishing their projects on Windows Phone and Xbox Live platforms.