Ways to access CRM web service for Customizing a CRM Application
Customizing the CRM Application by server side programming using Microsoft Dynamics CRM 4.0 SDK: Microsoft Dynamics CRM 4.0 provides three dynamic web service interfaces. Those are 1. Discovery Web Service (DiscoveryService.asmx). 2. CRM web service (Crmservice.asmx). 3. Metadata web service(MetadataService.asmx) Discovery web Service: This enables to discover the CrmService and Metadata Service web service endpoint URLs and other information about your target organization. How to reference discovery web service to customizing solution: In the URL field, paste the following string, replacing with the name of a Microsoft Dynamics CRM Server. The TCP port number in the Web service URL is optional and only required if Microsoft Dynamics CRM is installed to a nondefault Web site on the server. For Active Directory Authentication (On-Premises): http:// / mscrmservices/2007/ad/crmdiscoveryservice.asmx. For Windows Live(Passport) Authentication: https://dev.crm.dynamics.com/MSCRMServices/2007