The Cloud provides an increasingly popular way of procuring IT services that offers many benefits including increased flexibility as well as reduced cost. It extends the spectrum of IT service delivery models beyond managed and hosted services to a form that is packaged and commoditized. However - many organizations are sleepwalking into the Cloud. Moving to the Cloud may outsource the provision of the IT service, but it does not outsource the customers responsibilities. There are issues that may be forgotten or ignored when adopting the cloud computing. This presentation sets out the deadly sins of Cloud computing and then commandments to avoid them.