In the last three chapters, we saw some of the local storage options that can be used to store data locally and have also built apps that are best suited for storing data locally. Storing data locally will not be a best option in many cases especially when we build line of business (LOB) applications. There are times when our app needs to interact with a very large quantity of data stored in the database servers like SQL Server, Oracle, and so on. As of now we don’t have the necessary APIs similar to ADO.NET in WinRT to communicate directly with the database, so we need to build a server-side async/services infrastructure that exposes the data by connecting to the database, which can then be consumed by the Windows 8 app.