ITIL4-CDS Create, Deliver and Support Practice Question
Exhibit
{
"service_id": "CustomerPortal",
"deployment_strategy": "blue_green",
"routing": {
"staging_weight_percent": 100,
"production_weight_percent": 0
},
"health_check_status": "passed"
}Refer to the exhibit. An IT team is utilizing a blue-green deployment strategy for the CustomerPortal service. The current routing directs 100% of traffic to the staging environment, and health checks have successfully passed. What should be the immediate next step in this value stream according to ITIL 4 deployment management practices?
⚠ Common exam trap
Candidates often suggest 'performing more testing' or 'notifying users' as the next step, failing to realize that once health checks pass in blue-green, the switch is the final action.
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
✓
Shift user traffic routing from the old production environment to the newly verified staging environment to complete the release cutover.
In a blue-green deployment where health checks have passed on the new (staging/green) environment, the next step is to switch the routing mechanism to direct production traffic to the new environment. This enables rapid, low-risk cutovers with zero downtime, embodying ITIL 4 principles of effective release and deployment management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Roll back the deployment immediately to investigate why the production weight is currently set to zero percent.
Why it's wrong here
Setting the initial production weight to zero in a blue-green deployment is standard practice for verifying the staging environment prior to traffic cutover. Rolling back at this stage without testing would unnecessarily abort a healthy deployment.
- ✓
Shift user traffic routing from the old production environment to the newly verified staging environment to complete the release cutover.
Why this is correct
Since health checks have passed, switching the traffic routing to direct users to the new environment is the correct next step. This executes the core benefit of blue-green deployments by ensuring instant cutover with zero downtime and easy rollback capability.
- ✗
Decommission the old production environment permanently before routing any live user traffic to the new deployment.
Why it's wrong here
Decommissioning production before any live traffic reaches the validated staging environment removes the rollback target, so a failed cutover leaves no service. Retiring the old environment is correct only after the new deployment has served production traffic successfully and the rollback window has closed.
- ✗
Submit a standard change request to a traditional change advisory board for a 7-day review period before changing traffic weights.
Why it's wrong here
A seven-day CAB review inserts delay after health checks have already passed, contradicting the immediate traffic switch the blue-green value stream expects. Standard change pre-approval suits routine low-risk changes, not a validated deployment awaiting cutover.
Visual reference
About these practice questions
This ITIL4-CDS question is part of Courseiva's 155-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official PeopleCert/AXELOS exam blueprint
This ITIL4-CDS practice question is part of Courseiva's free PeopleCert/AXELOS 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 ITIL4-CDS exam.