official website description of the free version:
- 20 build configuration quotas
- 3 build agent quotas
 I just want to ask what this  build configuration quota  and  build agent quota  means 
official website description of the free version:
 I just want to ask what this  build configuration quota  and  build agent quota  means 
self-answer:
 2018.2 (build 60925)  build configuration has been increased to  100 , and the agent is still  3