The table below highlights DITA Exchange features:

Based on SharePoint 2007Basing the solution on SharePoint 2007 basically lends all standard SharePoint features and functions to it. Robust usability, authentication, easy to customize and personalize are just a few…
Browser-basedNo software to install on clients. You can get started with a browser and an Internet connection.
Form-based topic creation and editingForms can provide help texts and very precise author guidance.
No DITA or XML knowledge required
Compose publications using drag and dropEasily build your publication outline (DITA map)
Open, transparent solutionIf you want to use your favorite DITA/XML tool for advanced mark-up of your topics, you can freely do so
Robust workflow engineYou can either choose between 4 ready to use workflows or design/customize your own workflows, based on SharePoint’s very robust and advanced workflow engine
DITA Open Toolkit integratedThe DITA Open Toolkit is integrated with the solution and can be used from inside SharePoint. Just right-click your DITA map…
Publish to many formatsYou can publish to: HTML, HTML Help, Java Help, PDF, XPS, Word document,  Complete web site (for example for CD-ROM distribution)
Advanced publishing engineExtendable publishing engine: Plug-in your favorite publishing engine for integrated publishing (FrameMaker, Word, Antenna House, DITA OT, etc.)
DITA content types with integrated metadataDITA metadata directly integrated in SharePoint custom lists
Integrated records managementConfigurable records management built-in
Terms libraryBuilt-in terminology Wiki-site. Build your own terminology base quickly and easily using Wiki technology
Built-in translationBuilt-in DITA-specific translation service (add-on service under development)
Built-in printing servicesBuilt-in world-wide printing service (add-on service under development)
Built-in DITA and DITA Exchange e-learning(add-on service under development)
XML “Diffing” engineFor custom revision and revision mark-up solutions 
Flexible license structurePay per user, per month (minimum up-front investment)
Choose between hosted or in-house solutionYou can use DITA Exchange as a hosted (ASP) service, either because you do not have in-house SharePoint 2007 servers, or just to get started quickly.

Or you can select an in-house installation on your own SharePoint 2007 setup.