When you migrated from Microsoft Exchange 2000 & 2003, where they provide several API's that are not included in Microsoft Exchange Server 2007. Please find the following API's that are not included in the Exchange Server 2007 environment & the recommended technologies to migrate to.

APIs that are not included in Exchange 2007

API

Status in Exchange 2007

Replacement Technology

CDOEX

De-emphasized but still supported.

Exchange Web Services

CDOEXM

Not included in Exchange 2007.

Microsoft Windows PowerShell and Exchange 2007 commands

CDOWF

Not included in Exchange 2007.

Windows Workflow Foundation (WWF) and Microsoft BizTalk Server 2006

EXOLEDB

De-emphasized but still supported.

Exchange Web Services

MAPI

De-emphasized but still supported.

Exchange Web Services

Public Folders

De-emphasized but still supported.

Exchange Web Services

Store Events

De-emphasized but still supported.

Exchange Web Services

WebDAV

De-emphasized but still supported.

Exchange Web Services

Web Forms

Not included in Exchange 2007.

ASP.NET

WMI Providers

Not included in Exchange 2007.

Windows PowerShell and Exchange Server 2007 commands.