Question 818 of 247
SOA-C02 Deployment, Provisioning, and Automation Practice Question
A company uses AWS CodePipeline to deploy a web application. The pipeline includes a stage that runs a database migration script. The SysOps administrator wants to ensure that if the migration script fails, the entire pipeline stops and the previous version of the application remains deployed. Which pipeline stage configuration should be used to achieve this behavior?
⚠ Common exam trap
Candidates often confuse the OnFailure ROLLBACK option with a full infrastructure rollback (like AWS CloudFormation stack rollback), not realizing that CodePipeline's ROLLBACK only affects the pipeline execution state and does not automatically revert the deployed application or database changes.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure the migration step as a sequential action and set the OnFailure to ABORT.
Setting the migration step as a sequential action with OnFailure set to ABORT ensures that if the migration script fails, the pipeline immediately stops and does not proceed to any subsequent stages. This prevents the deployment of a new application version that depends on a failed database migration, thereby keeping the previous version deployed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a parallel action group for the migration step so other steps continue.
Why it's wrong here
Using a parallel action group would place the migration alongside other actions, allowing them to run concurrently. If the migration action fails, CodePipeline does not automatically stop the entire pipeline; instead, the failure is reported per action, and other actions may still execute or the stage may be marked failed depending on the configuration. This does not guarantee that subsequent stages are skipped, so the requested behavior of stopping the entire pipeline on migration failure is not met.
- ✓
Configure the migration step as a sequential action and set the OnFailure to ABORT.
Why this is correct
Configuring the migration step as a sequential action with OnFailure set to ABORT causes CodePipeline to immediately stop the pipeline execution when that action fails, without running any subsequent actions or stages. The existing deployment remains untouched because no further deployment stages are triggered after the failure. This matches the requirement precisely: the pipeline halts and the prior version stays in place.
- ✗
Configure the migration step as a sequential action and set the OnFailure to ROLLBACK.
Why it's wrong here
ROLLBACK attempts to revert the pipeline to the last known good state. This could trigger additional actions and might not leave the previous version of the application simply in place; it may attempt to undo changes, which is not the stated requirement.
- ✗
Use a manual approval step after the migration to verify success.
Why it's wrong here
A manual approval step halts the pipeline for human intervention, but it does not automatically handle failure. If the migration fails before the approval step, the pipeline would still transition to the approval stage unless failure handling is configured separately.
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Last reviewed: Jun 11, 2026
This SOA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SOA-C02 exam.
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