Media Warehouse no only expands the features available through the ECMS Core's Media Manager but it redefines what you can do with those files turning your media colelction into a valueable resource and tool.
As with the Media Manager the Media Warehouse will allow you to work with all files types, but now ads a whole range of tools to those file types. Edit image sizes and dimentions, create media slideshows, turn documents into PDF's, preview files, work within archives, etc.
The uses for the Media Warewouse are endless: allow your partners, visitors, and your own staff to create photo albums of different topics where pictures can be tagged for searching. Create a collection of Media specifically for desemination to the news media such as news releases, article ideas and resources, royalty free sound and video clips, etc.
For businesses or individuals looking to control access to different forms of media or even specific collections, the Media Warehouse has the added ability to assign permissions to collections for specific users or groups defined in the ECMS Core, giving only who you choose access to the media you own.
Combined with the Ecommerce module the media Warehouse is even capable of creating a stock media store turning this module into a revenue generator for your site.