Microsoft expanded LDAP support in Active Directory in Windows Server 2003 and included the LDAP API in the Microsoft Developer Network (MSDN) Platform SDK. Besides Microsoft, LDAP is supported in products from a veritable it is who of IT vendors, including Sun Microsystems, Inc., IBM Corp., Hewlett-Packard Company, Novell Inc., Red Hat Inc., Oracle Corp., Apple Inc. and Siemens AG. Each of these