SharePoint 2013 Architecture Overview

The General model has stayed same as in the previous version. Numerous platform level improvements and new capabilities:

•          Shredded Storage
•          SQL Improvements
•          Cache Service
•          Request Management
•          Themes
•          Sharing

Services Architecture in SharePoint 2013

•     Same service architecture as in 2010 with new service applications & enhancements.
•   Services are individually consumed from any web application.
•     Allows very rich farm structure if required.
•    Provides functionality to utilize services based on the application needs.

      Key changes in the service applications:

        

•   New service applications are available and improvements on the existing ones.
•   Office Web apps & Web Analytics are no longer service applications.