LightSwitch

Microsoft have recently came up with new product - Microsoft Visual Studio LightSwitch – a set of tools to create applications to run on web, desktop and cloud. Looks interesting, but why one need to have such application? Web application in the cloud can work for any business, if somebody concerns on cloud security – he can put local web server or cloud in his office. But running same application as desktop and web – I do not see any advantage. Any clues?

Another feature – LightSwitch can work with different data sources, it is good. But still no way to hit Access, which can work with wider range  of data sources! :)