Unit 4 Mixed Service Recognition Quiz

Learning outcomes

By the end of this lesson, the learner can:

1. Recognize the main AWS service categories covered in Unit 4.
2. Choose the right AWS service for common scenarios.
3. Distinguish between similar services such as EC2 vs ECS, RDS vs DynamoDB, Redshift vs EMR, and Lightsail vs broader AWS building blocks.
4. Explain the core mental model behind compute, storage, database, and deployment services. (AWS Documentation)

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Unit 4 review snapshot

So far, Unit 4 has covered:

• Compute and scaling: EC2, security groups, EBS, ELB, Auto Scaling, and horizontal vs vertical scaling. AWS defines an EC2 instance as a virtual server in the AWS Cloud, and EC2 Auto Scaling manages groups of instances and can work with Elastic Load Balancing. (AWS Documentation, AWS Documentation, AWS Documentation)
• Storage: S3 storage classes, EBS, EFS, FSx, and Snow Family concepts. AWS documents S3 Standard as the default storage class, distinguishes Standard-IA from One Zone-IA, and positions Snow Family for physical transfer and edge scenarios. (AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation)
• Databases and data services: RDS/Aurora, DynamoDB, ElastiCache, Redshift, EMR, Neptune, and the QLDB concept. AWS describes DynamoDB as a serverless NoSQL database, Redshift as a managed data warehouse, EMR as a managed big data platform, Neptune as a graph database, and QLDB as a ledger database with an end-of-support notice. (AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation)
• Containers, app platforms, and deployment: ECS, Lightsail, and CloudFormation. AWS documents ECS as the container orchestration service with clusters, tasks, and services; Lightsail as the simpler bundled app platform; and CloudFormation as AWS's infrastructure-as-code service built around templates, stacks, and change sets. (AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation)

A good one-line summary is:

Unit 4 is about learning which AWS service fits which job.

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Review map

This map summarizes the official AWS service roles covered across Unit 4. (AWS Documentation, AWS Documentation, AWS Documentation, AWS Documentation)

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Warm-up: Match the Service to Its Category

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Knowledge Check

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Unit 4 wrap-up

At this point, a learner should be able to say:

• EC2 is the virtual server you manage.
• ELB and Auto Scaling help apps stay available and scale.
• S3, EBS, EFS, and FSx solve different storage problems.
• RDS, DynamoDB, ElastiCache, Redshift, EMR, and Neptune solve different data problems.
• ECS, Lightsail, and CloudFormation solve different app platform and deployment problems.