How many availability zones does AWS have?

Related questions

1. What are AWS Availability Zones?
2. What is public subnet?
3. What is scratch partition in ESXi?
4. What is difference between AMI snapshot?
5. What is Zone in cloud?
6. What is an edge location?
7. Does Netflix use ec2?
8. What is the largest data center in the world?
9. How much does Netflix make?
10. What is permanent storage?

Tags

1. #milan
2. #availability
3. #regions
4. #spans
5. #plans
6. #world
7. #announced
8. #jakarta
9. #bahrain
10. #zones
11. #within
12. #geographic
13. #cloud
14. #around