The cloud has introduced new scenarios for "cloud to ground" and "cloud to cloud" integration between systems. In this session, we look at the patterns and tools available to integrate applications, data, identity, and networks between these environments. Platforms like the Windows Azure Service Bus make it simple to share application data and business logic, while the Windows Azure Virtual Network can make your cloud services appear as local services. Active Directory Federation Services (AD FS) and Windows Azure Active Directory make true identity federation possible. This session includes demonstrations of these key technologies while sharing good practices for integrating at cloud scale.