Of course time has passed and the technology caught up with the ideas and there are a few milestones we have to mention:
In 1999 Salesforce.com started delivering applications to users using a simple website. The applications were delivered to enterprises over the Internet, and the dream of computing sold as utility started being reality. Although the service was successful, some more time would pass until it would become widespread.
In 2002 Amazon started Amazon Web Services, providing services like storage, computation and even human intelligence. However, only starting with the launch of the Elastic Compute Cloud in 2006 did a truly commercial service open to everybody exist.
2009 marked a key turning point in the evolution of cloud computing, with the arrival of browser based cloud enterprise applications, with the best known being Google Apps.