I don’t know if cloud computing can be considered revolutionary as this point. The technical merits of the cloud have been know for nearly a decade. My firm launched the web’s first Database-as-a-Service offering back in 1999, a time when very few software products had been released to the cloud. At that time, cloud computing could have been deemed revolutionary. Fast forward nearly 10 years, and SaaS is ready for prime time and gaining the respect it deserves.