The offerings are global – and available (Amazon, Google, Salesforce, etc.). There are attractions particularly in terms of avoiding major capital expenditure, scaling the infrastructure investment as demand for the business application grows. The 'private cloud' is now also an option. There are concerns – how do I pick the right vendor, will it prove expensive in the long run? However it seems to me that for a country like Ireland and for entrepreneurs here trying to build out businesses to kickstart our serious challenged economy, cloud computing offers a great way to push forward, with limited capital outlay but all the scalability to build web/ global business.
Dion Hinchcliffe's well thought out piece provides a more comprehensive list of some of the pros & cons. Time to move forward.