← SOA-C02·Amazon Web Services

Question 804 of 1,546

Deployment, Provisioning, and Automation →easyMultiple ChoiceObjective-mapped

SOA-C02 Deployment, Provisioning, and Automation Practice Question

This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A company needs to deploy a new version of a Lambda function. The deployment must be gradual, shifting 10% of traffic to the new version every 10 minutes until all traffic is served by the new version. If errors occur, the deployment should roll back immediately. Which deployment strategy should be used?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.

A
Blue/green deployment with AWS CodeDeploy
Why wrong: CodeDeploy can manage Lambda deployments, but the question asks for a strategy supported by Lambda itself.
B
All-at-once deployment
Why wrong: This deploys the new version to all traffic at once, not gradually.
C
Rolling deployment with Amazon ECS
Why wrong: ECS is for containers, not Lambda.
D
Canary deployment with AWS Lambda
Lambda supports canary deployments with traffic shifting and automatic rollback.

Full breakdown with real-world context →

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

✓

Canary deployment with AWS Lambda

A canary deployment with AWS Lambda allows traffic to be shifted gradually in increments (e.g., 10% every 10 minutes) and supports automatic rollback if errors are detected. Option A (blue/green with CodeDeploy) is not inherently gradual; it typically switches all traffic at once unless configured with a canary, but the question asks for the strategy, and 'canary' is the correct term. Option B (all-at-once) deploys immediately. Option C (rolling with ECS) is for container services, not Lambda. Therefore, option D is correct.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Blue/green deployment with AWS CodeDeploy
Why it's wrong here
CodeDeploy can manage Lambda deployments, but the question asks for a strategy supported by Lambda itself.
✗
All-at-once deployment
Why it's wrong here
This deploys the new version to all traffic at once, not gradually.
✗
Rolling deployment with Amazon ECS
Why it's wrong here
ECS is for containers, not Lambda.
✓
Canary deployment with AWS Lambda
Why this is correct
Lambda supports canary deployments with traffic shifting and automatic rollback.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

Quick reference

Cloud Service Model Comparison

Model	You Manage	Provider Manages	Examples
IaaS	OS, runtime, apps, data	Hardware, hypervisor, networking	EC2, Azure VMs, GCP Compute Engine
PaaS	Apps and data	OS, runtime, middleware, hardware	Elastic Beanstalk, Azure App Service
SaaS	Data and settings only	Everything else	Microsoft 365, Salesforce, Workday
FaaS / Serverless	Function code only	Infra, scaling, runtime	Lambda, Azure Functions, Cloud Run
CaaS	Containers and apps	Kubernetes, OS, hardware	EKS, AKS, GKE

What to study next

Got this wrong? Here's your next step.

Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Canary deployment with AWS Lambda — A canary deployment with AWS Lambda allows traffic to be shifted gradually in increments (e.g., 10% every 10 minutes) and supports automatic rollback if errors are detected. Option A (blue/green with CodeDeploy) is not inherently gradual; it typically switches all traffic at once unless configured with a canary, but the question asks for the strategy, and 'canary' is the correct term. Option B (all-at-once) deploys immediately. Option C (rolling with ECS) is for container services, not Lambda. Therefore, option D is correct.

What should I do if I get this SOA-C02 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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