Microsoft and Google are each growing their cloud revenue at over 100 percent per year. Still, AWS remains twice the size of those companies, plus IBM, when it comes to IaaS, Synergy estimated.

Performance varies widely among the big three cloud service providers – AWS, Google Cloud and Microsoft Azure – and their networks are a big reason why, a ThousandEyes study reveals.

It says: "According to a recent study by Citrix, a business unit of Cloud Software Group, 42% of organizations surveyed in the United States are considering or already have moved at least half of ...