You’ve known it was coming, and today the doors to Microsoft’s Office Store were flung wide open. In short, it’s a newfangled portal that enables avid Office and SharePoint users to search for, discover and install apps. Users will need a Microsoft account and the preview version of Office, SharePoint or Exchange in order to start diving in. Naturally, Microsoft has built a pretty stout control system for administrators, and it has also crafted an internal distribution mechanism in SharePoint called the App Catalog — a tool that “allows enterprises to build in-house apps or source them from partners and distribute them to employees within the organization.” Read the full story at Engadget.