Compute, Storage and Database Services
Cloud Technology and Services questions often ask for the correct core service across EC2, Lambda, Elastic Beanstalk, S3, EBS, EFS, RDS, DynamoDB, and backup services.
How to study for AWS Cloud Practitioner
Treat each question as a service-selection or responsibility decision: identify the business need, AWS responsibility, customer configuration, and best-fit service.
Core concepts
Concept 1
Compute services differ by management model, scaling pattern, runtime control, and operational responsibility.
Exam cue: Use EC2 when virtual server control is needed.
Concept 2
Storage services differ by object, block, file, archive, durability, access, and performance characteristics.
Exam cue: Use S3 for durable object storage.
Concept 3
Database services should be matched to relational, key-value, document, memory, graph, warehouse, or migration needs.
Exam cue: Use RDS for managed relational databases and DynamoDB for managed key-value or document workloads.
Risk pitfalls and guardrails
Using EBS as shared file storage across many instances.
Guardrail: Avoid answers that ignore customer configuration, choose unmanaged services when managed services fit, or use billing reports when proactive alerts are required.
Choosing EC2 when a managed or serverless service is a better fit.
Guardrail: Avoid answers that ignore customer configuration, choose unmanaged services when managed services fit, or use billing reports when proactive alerts are required.
Using S3 like a block device attached to an instance.
Guardrail: Avoid answers that ignore customer configuration, choose unmanaged services when managed services fit, or use billing reports when proactive alerts are required.
Memory anchors
EC2
Amazon EC2 provides resizable virtual servers in the cloud.
Lambda
AWS Lambda runs code without managing servers and scales by events.
Elastic Beanstalk
AWS Elastic Beanstalk deploys and manages applications while abstracting much infrastructure work.
S3
Amazon S3 is durable object storage for buckets and objects.
EBS
Amazon EBS provides block storage volumes for EC2 instances.
EFS
Amazon EFS provides managed elastic file storage for Linux workloads.
RDS
Amazon RDS provides managed relational database engines.
DynamoDB
Amazon DynamoDB is a managed NoSQL key-value and document database.
Aurora
Amazon Aurora is an AWS relational database engine compatible with MySQL and PostgreSQL.
AWS Backup
AWS Backup centralizes backup management across supported AWS services.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A company needs virtual servers with full control of the guest operating system and the ability to choose instance types. Which AWS service should it use?
A CPU-intensive scientific application spends most of its time performing complex calculations. Which EC2 instance family is the best starting point?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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