Is ESB a middleware?

Related questions

1. What is ESB exam?
2. What is ESB used for?
3. How does a message bus work?
4. How does an enterprise service bus work?
5. What is the difference between API and middleware?
6. What is service bus in Azure?
7. What is Microsoft Service Bus?
8. What does Enterprise Environment mean?
9. What are message queues used for?
10. Is API gateway a middleware?

Tags

1. #between
2. #system
3. #architecture
4. #software
5. #communication
6. #service
7. #implements
8. #oriented
9. #middleware
10. #database
11. #operating
12. #enterprise
13. #network
14. #interacting
15. #applications
16. #especially
17. #bridge
18. #mutually