Digital transformation promises many competitive advantages. But legacy infrastructures, custom-made applications, legal and security constraints delay the migration of enterprise workloads into the cloud, and concerns about vendor lock-in dampen the zeal for the transition amongst stakeholders. Technology advances rapidly and hardware quickly becomes obsolete. Regular upgrades are therefore crucial if organisations are to keep pace, facilitate growth, and reduce product time-to-market. Once they realise the benefits and cost-effectiveness of virtualisation, companies look towards IT outsourcing and private cloud infrastructures. Their main goals are to boost the security and reliability of customer-facing services, while keeping IT budgets under control.