There is an enormous emphasis on improving search in SharePoint 2013, both for IT and end users. The reason is obvious: If users can't find what they need when they need it, then all of the features in the world can't help. Developers and administrators get more control over ensuring strong search performance. One example: The new ability to customize the appearance of search results based upon content type, rather than simply delivering a uniform list as in the past. Microsoft's SharePoint Team Blog offers an extensive post on the basics of developing a successful search experience for your users. There is also new hybrid search support for environments that run both on premises (SharePoint Server) and cloud (Office 365) instances of SharePoint.