Quick Notes86 words
Optimising pipeline concurrency — quick notes
Concurrency — quick notes
| Fact | Detail |
|---|---|
| Microsoft-hosted unit | Parallel job = one concurrency slot |
| Consumed by | Every job — including matrix legs and other pipelines |
| Throttle a matrix | maxParallel |
maxParallel validity | Only with matrix |
parallel + matrix | Mutually exclusive |
| Self-hosted scaling | Infrastructure decision; VMSS agents / Managed DevOps Pools |
Trade-off: more concurrency = shorter wall-clock, higher peak cost. Less = queueing, slower feedback.