Convergence was Microsoft's premier Microsoft Dynamics event where you could experience the Microsoft Dynamics community in action.
"The event offers you a unique opportunity to network with your peers, partners, Microsoft team members, and industry experts together to share ideas and knowledge—all in one place. You’ll experience first-hand how you can use the power of Microsoft Dynamics and the full range of Microsoft products to optimize your business and improve your bottom line—now and in the future".
Convergence was arranged as a multi-day conference in the United States and as a single day event at several different locations in Europe.
More information here: http://www.microsoft.com/dynamics/convergence/