- A
Use AWS Global Accelerator to gradually shift traffic, and use Amazon ElastiCache for Redis to centralize session state
Global Accelerator provides anycast IP and traffic shifting; ElastiCache provides low-latency state sharing.
- B
Use Amazon Route 53 weighted routing to shift traffic to new EC2 instances, and store session state in Amazon S3
Why wrong: S3 is not designed for low-latency session state; Route 53 alone doesn't share state between on-prem and AWS.
- C
Use AWS CloudFront to cache static content, and use Amazon DynamoDB for session state
Why wrong: CloudFront is for content delivery, not traffic shifting for dynamic stateful apps.
- D
Use AWS Global Accelerator to shift traffic, and deploy AWS WAF to protect the application
Why wrong: WAF is for web application firewall, not session state management.
Quick Answer
The answer is to use AWS Global Accelerator to gradually shift traffic and Amazon ElastiCache for Redis to centralize session state. This strategy works because Global Accelerator’s endpoint weighting allows you to incrementally route traffic from on-premises to AWS without cutting over abruptly, while ElastiCache for Redis provides a single, in-memory session store that both environments can access, preserving session continuity and minimizing latency for global users via Global Accelerator’s anycast IP and edge locations. On the SAP-C02 exam, this scenario tests your understanding of combining traffic-shifting mechanisms with a centralized state layer to avoid the common trap of relying on DNS-based migration (like Route 53 weighted records), which lacks the fine-grained, real-time traffic control and anycast performance benefits of Global Accelerator. A key memory tip: think “weights for the shift, Redis for the stash”—the weights control traffic flow, and Redis holds the session state.
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 is migrating a large-scale, stateful application to AWS. The application maintains session state in memory on the current on-premises servers. The company needs a solution that preserves session state during migration and minimizes latency for users worldwide. Which strategy should the company use?
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
Use AWS Global Accelerator to gradually shift traffic, and use Amazon ElastiCache for Redis to centralize session state
Option A is correct because AWS Global Accelerator allows you to gradually shift traffic from on-premises to AWS using endpoint weights, minimizing disruption during migration. Amazon ElastiCache for Redis provides a centralized, in-memory session store that preserves session state across the migration, ensuring low-latency access for users worldwide by leveraging Global Accelerator's anycast IP and AWS edge locations.
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.
- ✓
Use AWS Global Accelerator to gradually shift traffic, and use Amazon ElastiCache for Redis to centralize session state
Why this is correct
Global Accelerator provides anycast IP and traffic shifting; ElastiCache provides low-latency state sharing.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Amazon Route 53 weighted routing to shift traffic to new EC2 instances, and store session state in Amazon S3
Why it's wrong here
S3 is not designed for low-latency session state; Route 53 alone doesn't share state between on-prem and AWS.
- ✗
Use AWS CloudFront to cache static content, and use Amazon DynamoDB for session state
Why it's wrong here
CloudFront is for content delivery, not traffic shifting for dynamic stateful apps.
- ✗
Use AWS Global Accelerator to shift traffic, and deploy AWS WAF to protect the application
Why it's wrong here
WAF is for web application firewall, not session state management.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Route 53 weighted routing with Global Accelerator's traffic-shifting capabilities, overlooking that Global Accelerator provides both performance optimization and gradual traffic migration, while Route 53 alone lacks the anycast edge network and fine-grained endpoint weight management needed for low-latency stateful migration.
Detailed technical explanation
How to think about this question
AWS Global Accelerator uses anycast IP addresses at AWS edge locations to route traffic optimally over the AWS global network, reducing latency by up to 60% compared to the public internet. ElastiCache for Redis stores session data in memory with sub-millisecond latency and supports replication and persistence, making it ideal for stateful applications that require fast reads and writes during a gradual migration where traffic is incrementally shifted via endpoint weights in Global Accelerator.
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.
TExam Day Tips
- 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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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Accelerate Workload Migration and Modernization — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Global Accelerator to gradually shift traffic, and use Amazon ElastiCache for Redis to centralize session state — Option A is correct because AWS Global Accelerator allows you to gradually shift traffic from on-premises to AWS using endpoint weights, minimizing disruption during migration. Amazon ElastiCache for Redis provides a centralized, in-memory session store that preserves session state across the migration, ensuring low-latency access for users worldwide by leveraging Global Accelerator's anycast IP and AWS edge locations.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on SAP-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is migrating a legacy monolithic application to AWS. The application has a stateful session layer that uses local disk storage. The migration plan involves rehosting the application on Amazon EC2 instances. What architecture change should the company implement to ensure high availability and stateless application tiers?
medium- A.Store session data in Amazon S3 with Transfer Acceleration.
- B.Use Amazon RDS with Multi-AZ to store session data.
- ✓ C.Use Amazon ElastiCache for session state management.
- D.Attach Amazon EBS volumes to each EC2 instance for session persistence.
Why C: Option B is correct because using ElastiCache for session state offloads state from EC2 instances, making them stateless and allowing auto scaling. Option A is wrong because Amazon S3 is not suitable for low-latency session state. Option C is wrong because EBS snapshots are for backup, not session offloading. Option D is wrong because Amazon RDS is for relational databases, not session caching.
Last reviewed: Jun 11, 2026
This SAP-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 SAP-C02 exam.
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