Dynamics CRM 2011 Web Service

Data Services:

	SOAP Endpoint	REST Endpoint
Capabilities	Assign Records Retrieve Metadata Execute Messages	Create, Retrieve, Update and Delete records. Associate and Disassociate records
Service URL	[Organization URL]/xrmservices/2011/organization.svc	[Organization URL]/xrmservices/2011/organizationdata.svc
Limitations		Messages that require the Execute method cannot be performed. Associate and disassociate actions can be performed by using navigation properties. Authentication is only possible within the application The OData protocol is not fully implemented. Some system query options are not available. cannot use late binding with managed code with Silverlight.
Messages	http://msdn.microsoft.com/en-us/library/gg309482.aspx

Discovery Service:

Capabilities	The IDiscoveryService Web service returns a list of organizations that the specified user belongs to and the URL endpoint address for each organization.
Service URL	[Server URL]/xrmservices/2011/discovery.svc
Method	IDiscoveryService.Execute	DiscoveryRequest, DiscoveryResponse
Messages	RetrieveUserIdByExternalIdRequest, RetrieveOrganizationRequest, RetrieveOrganizationsRequest

Deployment Service

Capabilities	Deployment service allows you to create solutions to take advantage of support for multiple organizations—also called multi-tenant support.
Service URL	[Server URL]/xrmdeployment/2011/deployment.svc
Method	Delete, Execute, Retrieve, RetieveAll, Update
Messages	http://msdn.microsoft.com/en-us/library/gg334312.aspx