A team wants to run containerized services with AWS-managed orchestration and autoscaling. They do NOT require Kubernetes compatibility. Which AWS service choice is most appropriate to meet these goals?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Distractor review
Amazon EKS
Amazon EKS is Kubernetes-based. Even though it is AWS-managed, it still requires a Kubernetes control plane and Kubernetes-specific operational concepts (for example, deployments, services, and Kubernetes APIs). This is unnecessary when Kubernetes compatibility is explicitly not required.
Best answer
Amazon ECS
Amazon ECS is a native container orchestration service. You can run containers without Kubernetes, and ECS integrates with AWS-native autoscaling (for example, ECS Service Auto Scaling with targets such as CPU/memory or request-based metrics when applicable to the architecture).
Distractor review
An EC2 Auto Scaling group only
An EC2 Auto Scaling group can scale compute instances, but it does not orchestrate containers (it does not schedule, place, or manage container tasks). You would still need an orchestration/control layer (such as ECS/EKS or a custom solution).
Distractor review
Amazon SQS as the compute layer
Amazon SQS is a messaging/queueing service. It does not run containers or provide container orchestration (it cannot schedule container tasks, maintain desired task counts, or manage runtime placement).
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A team needs to distribute TCP traffic (not HTTP) across multiple services. The services must see the original client source IP for auditing. Which AWS load balancer is the best fit?
Question 2
A solutions architect is designing an S3 bucket for a IoT ingestion API. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure? The design must avoid adding custom operational scripts.
Question 3
A solutions architect is designing an S3 bucket for a claims portal. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure?
Question 4
A team wants to delegate IAM management to developers, but must ensure developers can never grant themselves permissions beyond a specific limit. Which AWS mechanism best matches this requirement?
Question 5
A solutions architect is designing an S3 bucket for a healthcare document service. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure?
Question 6
A team wants to remove a bastion host used for administrative access to EC2 instances in private subnets. The instances should be reachable only for occasional troubleshooting by engineers who authenticate with AWS SSO. What is the best secure alternative within AWS, assuming the instances already have an instance profile attached?
FAQ
Questions learners often ask
What does this SAA-C03 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Amazon ECS — B. Choose Amazon ECS. ECS provides AWS-managed container orchestration and supports autoscaling via ECS Service Auto Scaling (including scaling the number of running tasks and integrating with load balancer/metrics-based approaches depending on the setup). Since the team does not need Kubernetes compatibility, ECS is a better fit than EKS, which is specifically built around Kubernetes APIs and semantics. EC2 Auto Scaling only scales instances; it does not manage container scheduling or task lifecycle. SQS is not a compute/orchestration service. A is wrong because EKS is Kubernetes-based and therefore introduces Kubernetes compatibility and operational patterns that the team explicitly does not require. C is wrong because EC2 Auto Scaling changes instance capacity but does not orchestrate container tasks; you would still need an orchestration service. D is wrong because SQS is for decoupling components via messaging and cannot directly run or orchestrate containers.
What should I do if I get this SAA-C03 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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