This document discusses integrating Microsoft SharePoint 2010 with Windows Azure. It introduces the different cloud service models and Microsoft's cloud offerings. There are several approaches to integrating SharePoint and Azure, including using ASP.NET, hosting Azure services, and custom services. Key points of integration include BCS, Silverlight, SQL Azure, workflows and events. The document demonstrates integrating Azure and BCS to display data in an external list, using Silverlight with SP COM and an external list, and consuming an Azure custom service via BDC and an external list. It also introduces SharePoint Online as a hosted option in Office 365.