Fan out, fan in with Azure Pipelines

FanOutFanIn.yml

resources:
  containers:
  - container: u14
    image: ubuntu:14.04
  - container: u16
    image: ubuntu:16.04
  - container: u18
    image: ubuntu:18.04

jobs:
- job: InitialJob
  pool:
    vmImage: 'Ubuntu 16.04'
  steps:
  - script: echo hello from InitialJob

- job: FanOutA
  dependsOn: InitialJob
  pool:
    vmImage: 'Ubuntu 16.04'
  steps:
  - script: echo hello from FanOutA

- job: FanOutB
  dependsOn: InitialJob
  pool:
    vmImage: 'Ubuntu 16.04'
  steps:
  - script: echo hello from FanOutB

- job: FanIn
  dependsOn:
  - FanOutA
  - FanOutB
  pool:
    vmImage: 'Ubuntu 16.04'
  strategy:
    maxParallel: 3
    matrix:
      ubuntu14:
        containerResource: u14
      ubuntu16:
        containerResource: u16
      ubuntu18:
        containerResource: u18
  container: $[ variables['containerResource'] ]
  steps:
  - script: echo hello from FanIn running in 1 of 3 containers