This documentation contains the following sections to help you build Exchange Web Services client applications:

• What's New
  
• Introduction to the EWS Managed API
  
• EWS Managed API Concepts
  
• Working with the EWS Managed API
  
• EWS Managed API Reference
  

The EWS Managed API introduces the following important changes that might affect your client applications:

• Distribution Lists have been renamed Contact Groups.
  
• The FindItems interface has been redesigned.
  
• The Autodiscover implementation now supports DNS SRV record lookup.
  
• The notifications interface has been redesigned.
  
• New methods have been added for getting and setting free/busy information.
  
• Several bugs have been fixed; numerous other minor changes have been made.
  

For more information about these and other changes, see What's New.