[Referencing The Microsoft Dynamics CRM Blog]
The Dynamics CRM to SharePoint integration has always been a key solution to document management within CRM. With two currently available solutions, the List Component and new server-based SharePoint integration, CRM is pleased to focus our efforts on the server-based integration. Dynamics CRM 2015 Update 1 will deprecate the List Component as a result of SharePoint’s deprecation of the sandbox solution, a dependency of the List Component.
Customers with List Component are advised to upgrade to the server-based SharePoint integration. With CRM 2015 Update 1, server-based integration gains hybrid support between CRM Online and SharePoint On-Prem. In a subsequent release, CRM will support CRM On-Prem to SharePoint Online and CRM On-Prem to SharePoint On-Prem. SharePoint Online or SharePoint Server 2013 SP1 and above is required for server-based integration.