Extensio vs. Duet: A Comparative Table
Desktop Connectivity to Back-end Sources	The Extensio SOA based Server with Office Add-in on Desktop	Duet: SAP and Microsoft
What You get	1. Works for any Office Application, including Outlook, Excel and Word. 2. Connects to all RFC/BAPI enabled SAP Transactions 3. Connects to multiple back-end sources	1. Works only on Outlook currently. Excel connectivity promised. 2. Connects to few (less than 10) transactions from SAP
Required User Desktop	1. Works on Office 2000+, hosting a Office Add-in. No Upgrades 2. Works on Windows 98+	1. Needs Microsoft Office Professional 2003 2. Needs Windows 2000 Professional or higher 3. Needs Microsoft .net Framework 1.1 or higher 4. SAPs Netweaver 04 or higher
Required SAP version	Works on SAP 3.1H+ using SAP JCO 2.1.6	Requires MySAP ERP 2004+
Development Tools for additions and enhancements	Browser based tools for building XML based Information Services and deploying them, providing full flexibility.	SDK promised in 2007. No details available at this time.
Required Server side Middleware	1. SOA based Server that Connects to multiple back-ends, including SAP 2. Works with multiple Application servers. 3. Choice of MS SQL, Oracle and DB2 to host Server repository	1. Microsoft Windows Server 2003+ 2. Microsoft Windows .NET Framework 1.1+ 3. Microsoft Exchange Server 2003+ 4. Microsoft SQL Server 2000+ 5. SAP Netweaver Java App Server 6. SAP Composite Application Framework Runtime