EAsE and Integrated Archive Platform (IAP) - HP Outlook Web Access (OWA) Extension on Exchange 2007 Whitepaper

OWA Extension on Exchange 2007 Architecture

The OWA Extension architecture is based upon Exchange Web services, which are an integral part

of the Exchange 2007 architecture. OWA Extension is a Web Service Client Application that is

installed on the customer’s Exchange 2007 server with a Client Access Server (CAS) role (described

later in this document). OWA Extension integrates with IIS (which provides client communication) and

Exchange Web Services (which provides communication to the previously installed Exchange/OWA

2007 environment). OWA Extension is integrated with IIS when the setup application

(HPOwaSetup.exe) creates a virtual space named PERSISTMailItem within the OWA virtual

directory.

Users may then log into the OWA client via Internet Explorer and connect to OWA 2007 and the

OWA Extension integration.

The following architecture diagram shows how the OWA Extension application is integrated with the

Exchange 2007 architecture.

Figure 1. The OWA Extension application and Exchange 2007 architecture

OWA

Extension

Web

Service

Client

Application