Before selecting a cloud solution, organisations need to evaluate whether the cloud is suitable for their needs and objectives. Cloud providers are promoting their services very strongly in the market. It can be challenging for decision-makers to form a clear view of the relative merits and potential pitfalls of various cloud services. Management needs to set clear criteria for success so that it can properly evaluate the options available. This is particularly important when using G-Cloud because of the requirement to evaluate all suppliers which meet the organisation's stated requirements and choose that which fits best including whole-life cost.