Amazon Web Services (AWS) is an infrastructure service provided by Amazon. It provides cloud computing services. Their services are available in a pay-as-you-go model, which means you just have to pay for what you use.
AWS has dozens of actual physical data centers spread across Availability Zones (AZs) in multiple regions across the world. An AZ represents a single location that contains multiple data centers and a Region is an area that contains multiple AZs in close proximity to each other.
All the services that are provided can be accessed from an AWS account from anywhere in the world. For example, we can start any virtual machine with the operating system of our choice in just a few minutes. There are database services for both SQL (such as MySQL and PostgreSQL) and NoSQL (such as Dynamo DB), storage services such as S3, which can store any kind of data...