Acrobat.com is really great example of Rich Internet Applications power. This is platform which integrate multiple online services, for example: Buzzword (Adobe’s online word processor), Share (Adobe’s file sharing system), Brio (the new version of Adobe Connect - meetings and presentations service) and online PDF generation. Of course now we have year of the RIA, so it should be possible to use it on the desktop, and it is ! There is an Air Application that provide similar functionality (with additional features but i haven’t tested yet). Everythings great but.. what about availability and scalability (especially after last amazon AWS crash), you should read this article Learning From THE S3 Outage. What is more Adobe made special Site: health.acrobat.com where we can see acrobat.com services condition.
Generally speaking this is another step forward in something called SaaS(Software as a service) and another example of exciting job called - RIA developer.