Maven's Central repository has always served as a great convenience for users of Maven, but you usually want more. When using Maven to develop software, it comes the time when you want to maintain your own repositories not only to ensure "build stability" within your organization, but share those artifacts with other developers and end-users.
Nexus greatly simplifies the maintenance of your own internal repositories and access to external repositories. With Nexus you can completely control access to, and deployment of, every artifact in your organization from a single location. Build a healthy, viable and productive development infrastructure for your team!