AWS vs Azure vs GCP: Professional Architect comparison

After passing the 3 big Cloud Architect Professional certifications, I wanted to write about that experience, and also compare the 3 clouds and some of the differences they have. All Professional exams recommend 2 years of experience with their cloud, but if you already know one of them, you already understand many concepts. For example, EC2, VMs and GCE. You already know that all are IaaS compute and what they are for, you just need to learn that in AWS you could have more control over them, an