AWS Services, Explained in Five Questions
Every service card answers the questions that actually matter when you meet a new AWS service: What is it, why does it exist, when should you pick it, where does it sit in an architecture, and how do you integrate it — plus exam-angle tips and links to the official AWS documentation and blogs. Coverage is tuned to the AWS Certified AI Practitioner (AIF-C01) exam.
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The 5 services below are the ones the Architecting on AWS path expects you to know. Open the study path →
🗄️ Data & Analytics · 2
Amazon S3Object storage — the data backbone of every AI workload.Durable (11 nines), effectively unlimited object storage organised in buckets, with storage classes from frequent-access to deep archive, versionin…What · Why · When · Where · How →Amazon OpenSearch ServiceSearch, log analytics, and vector database for RAG.A managed OpenSearch cluster (and serverless option) for full-text search and log analytics that now doubles as a vector database: k-NN indexes sto…What · Why · When · Where · How →
🛡️ Security & Governance · 2
AWS IAMWho can do what — identities, roles, and policies.The global identity and access service: users, groups, roles, and JSON policies that allow or deny every API action across AWS, with roles providin…What · Why · When · Where · How →Amazon CloudWatchMetrics, logs, and alarms for everything you run.The observability backbone: metrics from every service, log aggregation, alarms, dashboards, and anomaly detection — including model-invocation met…What · Why · When · Where · How →
⚙️ Compute & Cost · 1
Preparing for the exam? Start the AI Practitioner study guide or jump into the AIF-C01 learning path.