This book examines enterprise architecture (EA) in the context of the surging popularity of Cloud computing. It explains the transformation of EA resulting from the strategically significant convergence that cloud computing can achieve. Chapters cover each of the contributing architectures of EA, illustrating the current and impending implications of the Cloud on each of them. The author ties together these topics with chapters on Cloud integration and composition architecture. He also examines the Enterprise Cloud, federated Clouds, and the vision to establish the InterCloud.