Amazon AWS, Microsoft Azure and Google Cloud Services (GCS) are three well-known organisations that offer cloud solutions. Compare the cloud-related commercial offerings of these three companies, in terms of functionality, performance, scalability, degree of standardisation, ease of use, costs and any other characteristics you find relevant. You should do this by accessing and reviewing the information available on their respective websites. Make a recommendation, on the basis of your comparative assessment, as to which of the three commercial cloud services offerings would be preferred for migrating the airlines legacy computer system to a cloud-based scheme.