azure pipeline - writting and referencing it from different stage

In Azure devops, we can often write and then reference an output variable from a different stage or job. 

We can references it via dependencies.job_name.outputs["step_name.variable_name"]

- stage: Build

    displayName: 'Build Stage'

   

    jobs:

     

      # JOB 2: Output Variables (sharing between jobs)

      - job: Job2_OutputVariables

        displayName: 'Job 2: Set Output Variables for Later Jobs'

       

        variables:

          jobMessage: 'Hello from Job 2'

       

        steps:

          # Create a variable that can be used in dependent jobs

          - script: |

              echo "##vso[task.setvariable variable=sharedOutput;isOutput=true]Hello from Job2 Output"

              echo "##vso[task.setvariable variable=buildNumber;isOutput=true]$(Build.BuildNumber)"

            name: SetOutputVars

            displayName: 'Create Output Variables'

         

          - script: |

              echo "Job Message: $(jobMessage)"

              echo "Shared Output: $(SetOutputVars.sharedOutput)"

            displayName: 'Verify Output Variables'

 

      # JOB 3: Consume output variables from Job2

      - job: Job3_ConsumeOutput

        displayName: 'Job 3: Consume Output Variables from Job2'

        dependsOn: Job2_OutputVariables

       

        steps:

          # Reference output variables from dependent job

          - script: |

              echo "Received from Job2:

$(dependencies.Job2_OutputVariables.outputs['SetOutputVars.sharedOutput'])"

              echo "Build Number:

$(dependencies.Job2_OutputVariables.outputs['SetOutputVars.buildNumber'])"

            displayName: 'Use Variables from Previous Job'