The document discusses modern approaches to SharePoint development. It outlines traditional development models for SharePoint like full trust solutions and sandboxed solutions, as well as more modern client-side approaches using the SharePoint Framework, Add-ins, and Microsoft Graph API. The document recommends transitioning to client-side development using these modern tools and the new SharePoint Framework for building web parts that work across SharePoint platforms. It provides an overview of Microsoft's roadmap for SharePoint development in 2017, focusing on continued evolution of the SharePoint Framework and client-side capabilities.