Work with external data in SharePoint 2013
Last modified: July 10, 2014
Applies to: apps for SharePoint | Office 365 | SharePoint Foundation 2013 | SharePoint Server 2013
You can use the cross-domain library to access data in your remote web application if you provide a custom proxy page that is hosted in the remote infrastructure. As the developer, you are responsible for implementing the custom proxy page, and you have to deal with custom logic, such as the authentication mechanism, if there is one, to the remote application. Use the cross-domain library if you want the communication between the remote data source and the SharePoint page to occur at the client level.
For details about how to use the library in this way, see How to: Create a custom proxy page for the cross-domain library in SharePoint 2013.
Use the SharePoint web proxy to access external data
For details about how to use the proxy, see How to: Query a remote service using the web proxy in SharePoint 2013.