The top companies like Microsoft, Google etc are developing and expanding their cloud platforms as the future of these platforms is very bright as many companies are going to use the cloud based platforms for their operations. Please note that top companies charge higher fees or service charges to their customers or clients and in that scenario many small companies will enter the cloud platform services with less charges and many small to medium enterprises would take services from them and save on expenses. So it is not only the question as who is the best among the top ones but the main point is your requirement from that cloud platform or if you are seeking a job, your position in that organisation as a cloud platform software or management person. There is a big rush of people for these positions and every one would not be able to get them so easily. Hence it makes sense to search or explore some next to the top level aloud platforms in the industry for using the facility or seekig a job.
In addition to Amazon Web Services (AWS), Microsoft Azure, and Google Cloud there are some other companies also which are coming on the forefront in this area and we can consider them also if we are getting some advantage by joining hands with them. These companies are Alibaba Cloud, IBM Cloud, Oracle, Salesforce, SAP, Rackspace Cloud, and VMWare.
Knowledge is power.