Task 3.8: Identify services from other in-scope AWS service categories.

• AAmazon Simple Notification Service (Amazon SNS)

  Incorrect

  SNS pushes each message to its subscribers as soon as it is published. It is not a queue that holds orders until a worker asks for one.

• BAmazon EventBridge

  Incorrect

  EventBridge routes events to targets according to rules. Buffering work for a pool of workers to pull at their own pace is a queue's job.

• CAmazon Simple Queue Service (Amazon SQS)

  Correct

  SQS is a managed message queue that decouples components: the website sends orders to the queue, and workers receive and process them when they are ready.

• DAmazon Simple Email Service (Amazon SES)

  Incorrect

  SES sends and receives email, such as order confirmations. It does not pass work between application components.

A queue lets a fast producer and a slower consumer run at their own speeds: messages wait in SQS until a worker takes them.

• AAmazon WorkSpaces

  Correct

  WorkSpaces provides virtual, cloud-based desktops that users can reach from their own devices, without the company buying and deploying hardware.

• BAWS Amplify

  Incorrect

  Amplify is for building and hosting web and mobile application frontends. It does not provide desktops.

• CAmazon Connect

  Incorrect

  Connect is a cloud contact center service for customer calls and chats, not a virtual desktop.

• DAWS IoT Core

  Incorrect

  IoT Core connects and manages Internet of Things devices. It has nothing to do with employee desktops.

End-user computing on AWS means the desktop runs in the cloud and is streamed to whatever device the employee has; WorkSpaces is that service.

• AAmazon Simple Queue Service (Amazon SQS)

  Incorrect

  SQS holds messages in a queue for applications to pull. It does not send SMS or email to people.

• BAmazon Simple Notification Service (Amazon SNS)

  Correct

  SNS delivers messages published to a topic to all its subscribers, including SMS and email endpoints, and is used for application and system alerts such as CloudWatch alarms.

• CAmazon Connect

  Incorrect

  Connect is a cloud contact center for customer service, not an alerting service.

• DAWS X-Ray

  Incorrect

  X-Ray traces requests through an application to analyze performance. It does not send notifications.

One message, many recipients, several channels: publish to an SNS topic and let it fan out.

• AAmazon WorkSpaces

  Incorrect

  WorkSpaces provides virtual desktops for users. It does not build or host web applications.

• BAmazon Connect

  Incorrect

  Connect is a cloud contact center service.

• CAWS Amplify

  Correct

  Amplify Hosting provides a Git-based workflow for hosting full-stack serverless web apps with continuous deployment: you connect a Git repository, and changes are built and deployed.

• DAWS IoT Core

  Incorrect

  IoT Core connects and manages Internet of Things devices.

Frontend and mobile developers who want hosting and continuous deployment without running infrastructure are Amplify's audience.

• AAWS X-Ray

  Correct

  X-Ray collects data about the requests your application serves and traces them across services, so you can find where latency and errors come from.

• BAWS CloudTrail

  Incorrect

  CloudTrail records API calls made to AWS in your account, for auditing. It does not trace requests through your own application.

• CAWS CodePipeline

  Incorrect

  CodePipeline automates the build, test and release of software. It does not analyze running requests.

• DAWS Config

  Incorrect

  AWS Config records how resources are configured. It does not measure request latency.

Distributed tracing — one request, many services, where did the time go — is X-Ray's job among the developer tools.