What is the difference between Azure Static Web App and Azure blob storage static website?

What is the difference between Azure blob storage static website and Azure Static Web Apps

There are lot of other benefits that comes with Azure static web apps that don't come with the static website which is hosted on blob storage.

• Functions in the same repo.
• TLS cert management (free!)
• Automated preview environments
• APIs that are scaled and hosted with your static content
• Content and corresponding APIs logically versioned together
• Simplified build and deployment process

UPDATE : Azure static web apps went GA since May 2021

Here is a great blog on the same.