AWS defines six main advantages of cloud computing:

1. Trade fixed expense for variable expense: Instead of investing heavily in data centers and servers before you know how you’re going to use them, you can pay only when you consume computing resources.
2. Benefit from massive economies of scale: Because of usage from hundreds of thousands of customers is aggregated in the cloud, providers such as AWS can achieve higher economies of scale, which translates into lower pay-as-you-go prices.
3. Stop guessing capacity: Eliminate guessing about your infrastructure capacity needs. You can access as much or as little capacity as you need, and scale up and down as required with only a few minutes’ notice.
4. Increase speed and agility: In a cloud computing environment, new IT resources are only a click away, which means that you reduce the time to make those resources available to your developers from weeks to just minutes.
5. Stop spending money running and maintaining data centers: Focus on projects that differentiate your business, not the infrastructure. Cloud computing lets you focus on your own customers, rather than on the heavy lifting of racking, stacking, and powering servers.
6. Go global in minutes: Easily deploy your application in multiple regions around the world with just a few clicks. This means you can provide lower latency and a better experience for your customers at minimal cost.