You are working on an e-commerce web application running on an EC2 instance. But it is experiencing a bad performance in browsing and searching use cases when heavy load use-cases are running simultaneously. The application monitors highlight a bottleneck in the web tier.
You decide to re-engineer the application code by decoupling the web tier components from the order`s heavy workloads. What AWS service can support the application change?

Answer options:

A.AWS Auto Scaling
B.AWS Elastic Load Balancing
C.Amazon SQS
D.Amazon Kinesis Streams

Answer: C
Option A is INCORRECT because it is not a service for decoupling use-case. AWS Auto Scaling adjusts the capacity to maintain performance leaving unchanged the application design.
Option B is INCORRECT because AWS ELB is a service to distribute the workload across EC2 instance, not a service to support application refactoring or re-engineering.
Option C is CORRECT because Amazon SQS implements messaging that is a typical integration pattern to decouple application components. AWS documentation mentions "Amazon SQS offers a reliable, highly-scalable hosted queue for storing messages as they travel between applications or microservices. It moves data between distributed application components and helps you decouple these components".
Option D is INCORRECT because it is a streaming service not suitable for the scenario.
Diagram: none
References:
https://aws.amazon.com/sqs/faqs/