If you talk about the infrastructure Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) industry then Amazon's AWS can be seen clearly on the top. However, the question you are looking for is a very broader one as AWS offers a huge number of services. You need to be a little more specific with your question in order to get a better answer. For example: AWS EC2 . AWS Lightsail. AWS Lambda. etc. Please, add some details so the question could be answered in a better way.