AWS Certified Solutions Architect - Associate
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A social media company wants to allow its users to upload images in an application that is hosted in the AWS Cloud. The company needs a solution that automatically resizes the images so that the images can be displayed on multiple device types. The application experiences unpredictable traffic patterns throughout the day. The company is seeking a highly available solution that maximizes scalability.
What should a solutions architect do to meet these requirements?
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UAnonymous
A
Create a static website hosted in Amazon S3 that invokes AWS Lambda functions to resize the images and store the images in an Amazon S3 bucket.
B
Create a static website hosted in Amazon CloudFront that invokes AWS Step Functions to resize the images and store the images in an Amazon RDS database.
C
Create a dynamic website hosted on a web server that runs on an Amazon EC2 instance. Configure a process that runs on the EC2 instance to resize the images and store the images in an Amazon S3 bucket.
D
Create a dynamic website hosted on an automatically scaling Amazon Elastic Container Service (Amazon ECS) cluster that creates a resize job in Amazon Simple Queue Service (Amazon SQS). Set up an image-resizing program that runs on an Amazon EC2 instance to process the resize jobs.
Explanation:
Explanation
Option A is the correct answer because it provides a highly scalable and serverless architecture that meets all requirements:
- Static website hosted in Amazon S3 - Provides high availability and scalability for serving the frontend
- AWS Lambda functions - Automatically scale to handle unpredictable traffic patterns without provisioning servers
- Amazon S3 bucket - Ideal for storing images with high durability and availability
- Serverless architecture - Maximizes scalability and handles unpredictable traffic efficiently
Why other options are incorrect:
Option B:
- Static website on CloudFront is good for content delivery, but CloudFront is not typically used to host dynamic websites
- Amazon RDS database is not suitable for storing images (better for structured data)
- AWS Step Functions is for orchestrating workflows, not directly for image processing
Option C:
- EC2 instance requires manual scaling and cannot handle unpredictable traffic patterns efficiently
- Single EC2 instance creates a single point of failure
- Requires managing servers and scaling infrastructure
Option D:
- While ECS can auto-scale, it's more complex than a serverless solution
- EC2 instance for image processing still requires server management
- More moving parts than necessary for this use case
Key AWS services for this solution:
- Amazon S3 for static website hosting and image storage
- AWS Lambda for serverless image processing
- Amazon API Gateway (implied) to trigger Lambda functions from the frontend
- Amazon CloudFront (optional) for content delivery optimization
This serverless architecture provides maximum scalability, high availability, and cost efficiency by only paying for actual usage.
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