Discuss Amazon SAA-C03 Exam Topic 2 Question 51

An ecommerce company is migrating its on-premises workload to the AWS Cloud. The workload currently consists of a web application and a backend Microsoft SQL database for storage.

The company expects a high volume of customers during a promotional event. The new infrastructure in the AWS Cloud must be highly available and scalable.

Which solution will meet these requirements with the LEAST administrative overhead?

AMigrate the web application to two Amazon EC2 instances across two Availability Zones behind an Application Load Balancer. Migrate the database to Amazon RDS for Microsoft SQL Server with read replicas in both Availability Zones.

BMigrate the web application to an Amazon EC2 instance that runs in an Auto Scaling group across two Availability Zones behind an Application Load Balancer. Migrate the database to two EC2 instances across separate AWS Regions with database replication.

CMigrate the web application to Amazon EC2 instances that run in an Auto Scaling group across two Availability Zones behind an Application Load Balancer. Migrate the database to Amazon RDS with Multi-AZ deployment.

DMigrate the web application to three Amazon EC2 instances across three Availability Zones behind an Application Load Balancer. Migrate the database to three EC2 instances across three Availability Zones.

Suggested Answer: C

To ensure high availability and scalability, the web application should run in an Auto Scaling group across two Availability Zones behind an Application Load Balancer (ALB). The database should be migrated to Amazon RDS with Multi-AZ deployment, which ensures fault tolerance and automatic failover in case of an AZ failure. This setup minimizes administrative overhead while meeting the company's requirements for high availability and scalability.

Option A: Read replicas are typically used for scaling read operations, and Multi-AZ provides better availability for a transactional database.

Option B: Replicating across AWS Regions adds unnecessary complexity for a single web application.

Option D: EC2 instances across three Availability Zones add unnecessary complexity for this scenario.

AWS Reference:

Auto Scaling Groups

Amazon RDS Multi-AZ

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32 comments · newest first

Ngoc 11 months ago

Is RDS really that much easier to manage than EC2 for the database?

Stephen 11 months ago

I agree, C is the way to go for scalability and availability.

Marsha 11 months ago

Wait, why would anyone choose D? Three instances for the database seems overkill!

Kip 11 months ago

I think Option A is better for less complexity.

Wilson 12 months ago

Option C seems solid with Multi-AZ for the database.

Fanny 12 months ago

I remember that having more instances can help with availability, but option D seems like overkill with three EC2 instances. I’m leaning towards option C, but I need to double-check the requirements.

Arthur 1 year ago

I think option C is the best choice because it combines Auto Scaling with RDS, which should reduce admin overhead. But I’m a bit confused about how Multi-AZ works in practice.

Maile 1 year ago

I practiced a similar question where we had to choose between EC2 and RDS. I feel like option A might be too complex with the read replicas, but I can't recall the exact details.

Tran 1 year ago

I remember studying about using Amazon RDS for databases, especially for high availability. I think option C sounds familiar, but I'm not entirely sure about the Multi-AZ part.

Mona 1 year ago

This is a tough one. I'll need to review the cloud service options and high availability concepts to make sure I select the right solution.

Sherita 1 year ago

I'm confident I can work through this step-by-step. The question provides good details to help me identify the best approach.

Whitney 1 year ago

Okay, the key here is to find the solution with the least administrative overhead. I'll focus on that as I evaluate the choices.

Lisbeth 1 year ago

Hmm, I'm a bit unsure about the database migration options. I'll need to think through the tradeoffs carefully.

Freeman 1 year ago

This looks like a pretty straightforward cloud migration question. I think I can handle this one.

Paulene 2 years ago

Option C uses Amazon RDS with Multi-AZ deployment for the database, ensuring high availability and scalability with less administrative overhead.

Maynard 2 years ago

Why do you think option C is better?

Marge 2 years ago

Hmm, I dunno, have you considered the 'Throw everything at the cloud and hope it sticks' approach? Just kidding, C is the clear winner here.

Soledad 2 years ago

↳ replying to Marge

Definitely, C seems like the most efficient option for the company's needs.

Soledad 2 years ago

↳ replying to Marge

That sounds like a solid plan. High availability and scalability without too much administrative overhead.

Soledad 2 years ago

↳ replying to Marge

C) Migrate the web application to Amazon EC2 instances that run in an Auto Scaling group across two Availability Zones behind an Application Load Balancer. Migrate the database to Amazon RDS with Multi-AZ deployment.

Bettina 2 years ago

I'm with Olen on this one. C seems like the most streamlined and scalable solution.

Jina 2 years ago

↳ replying to Bettina

I'm leaning towards C too. It seems like the most straightforward solution for the company's needs.

Phil 2 years ago

↳ replying to Bettina

C definitely seems like the least administrative overhead option for this migration.

Agustin 2 years ago

↳ replying to Bettina

I think C is the way to go as well. It's the most efficient choice.

Isidra 2 years ago

↳ replying to Bettina

I agree, C seems like the best option for high availability and scalability.

Paulene 2 years ago

I disagree, I believe option C is the most suitable.

Maynard 2 years ago

I think option A is the best choice.

Olen 2 years ago

Option C is the way to go! Minimal administrative overhead and high availability, perfect for a promotional event.

Suzi 2 years ago

↳ replying to Olen

It's a smart choice for handling a high volume of customers during a promotional event.

Antonio 2 years ago

↳ replying to Olen

And having the database on Amazon RDS with Multi-AZ deployment ensures high availability without much manual intervention.

Gianna 2 years ago

↳ replying to Olen

I agree, using Amazon EC2 instances in an Auto Scaling group will definitely help with scalability.

Brock 2 years ago

↳ replying to Olen

Option C is the way to go! Minimal administrative overhead and high availability, perfect for a promotional event.

Amazon SAA-C03 Exam - Topic 2 Question 51 Discussion