Cloud and System Architecture Terminology - Questions

1. How do you define cloud architecture? 
2. What does serverless mean? 
3. How do you define "reliability"? 
4. How do you measure reliability? In what units?
5. How do you calculate and measure reliability? 
6. How do you define availability? 
7. How do you measure availability? In what units? 
8. How do you calculate availability? 
9. What is a highly available system? 
10. How do you define "fault tolerance"?
11. How do you define scalability? 
12. How do you define recoverability? 
13. What is the relationship between availability, recoverability, fault tolerance and scalability? 

https://aws-architecture-svetlana.blogspot.com/2023/12/cloud-and-system-architecture.html - Answers