Shredded Storage
In SharePoint 2010, if version history is enabled on a document library, each new version results in a new BLOB for that document. Second, I/O performance is problematic in SharePoint 2010. There’s an unnecessary file read that occurs when changes.At the highest level, what SharePoint 2013 shredded storage does is “chunk” or “page” the BLOB into numerous smaller shreds. So a single BLOB is now a construct made up of numerous shreds.So, for example, if you have versioning enabled and a user makes a change to a document, only changed shreds are added to the storage footprint of that document. Shreds that have not changed from the previous version are simply “associated” with both versions. Shredded storage also reduces the amount of information about a file that has to be retrieved by the web server from the content database, so I/O improves.
Business Connectivity Services
Support for OData Business Data Connectivity (BDC) connections, in addition to connections for WCF, SQL Server, and .NET assemblies. An event listener with an event subscriber on the SharePoint 2013, to enable SharePoint users to receive notifications of changes to the external system. Self-contained apps for SharePoint.
eDiscovery
eDiscovery center is new site template, which creates a portal for managing cases—you can access cases to search, hold content, and export content.You can also now take the results of your eDiscovery search—including documents, wiki pages, Exchange email messages and tasks– and export them into a review tool.
Records management and compliance
Enhanced compliance simply by extending retention policies to SharePoint sites.
Business intelligence
New features in Excel for business intelligence (BI): In-Memory BI Engine (IMBI) for near-instant analysis of millions of rows of data; Power View Add-in for Excel, which offers visualizations, animations, and smart querying to enable users to visualize modeled data; decoupled PivotChart and PivotTable reports allowing for the creation of PivotChart reports without having to add a PivotTable report on the same page; and the ability to do trend analysis from cells in PivotTable reports that use OLAP data.
Workflow
Microsoft made architectural changes in SharePoint Workflow.But if you want the SharePoint 2013 workflow platform, you need to install and configure Windows Azure Workflow to communicate with your 2013 farm.These new features include a visual workflow that uses a Visio 2013 Preview add-in, the ability to enable no-code web service calls from inside a workflow, new actions for the task process, the ability to start a workflow built on SharePoint 2010 from a workflow built on SharePoint 2013, and new workflow building blocks called Stage, Loop, and App Step.
