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AWS Cloud Practitioner: Knowledge Library & Illustrated Guides

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Responsibility ledger: AWS operates underlying infrastructure; EC2 guest OS, RDS query tuning, workload data and access have distinct customer duties. Lambda managed-runtime Auto mode is an explicit assumption. ORIGINAL GUIDE
OpenExam original · 12 min read

AWS Shared Responsibility Model: What Changes With the Service?

Resolve an ownership dispute by tracing the obligation, not by counting how managed a product sounds.

Read the illustrated guide
Requirement comparison: host and guest-OS control points to EC2; event handler with no host-management need points to Lambda Event Functions; missing constraints require more information. ORIGINAL GUIDE
OpenExam original · 12 min read

EC2 vs Lambda for Cloud Practitioner: Start With the Workload Constraint

Compare the control and execution requirements before naming a universal winner.

Read the illustrated guide
Cost questions mapped to tools: assumed inputs to Pricing Calculator; recorded cost and forecast to Cost Explorer; threshold notifications and separately configured actions to Budgets. ORIGINAL GUIDE
OpenExam original · 12 min read

AWS Pricing Calculator, Cost Explorer, and Budgets: Match the Cost Question

Keep assumptions, recorded charges, forecasts, notifications, and actions in separate rows.

Read the illustrated guide
Four independent requirement-to-capability arrows map stored work to SQS, topic notifications to SNS, event routing to EventBridge, and execution state to Step Functions; they are not a pipeline. ORIGINAL GUIDE
OpenExam original · 12 min read

SQS, SNS, EventBridge or Step Functions: Separate Four Integration Decisions

Use a fictional equipment-loan service to distinguish buffered work, notifications, event routing and execution state.

Read the illustrated guide

Original guides explain selected concepts using retained source references, new examples and original diagrams. They are teaching resources, not video transcripts or official exam papers.