AWS Certification Study App
A production cert-prep application built for an internal team using official AWS training materials. Any AWS certification path can be loaded in — the architecture is exam-agnostic by design.
Adaptive difficultyLLM-generated explanationsOfficial AWS materialsMulti-exam support
What I built
- Question bank in Postgres (Supabase), tagged by AWS service, exam track, and Bloom taxonomy level — seeded from official AWS exam guides and whitepapers.
- Adaptive engine that adjusts difficulty based on a rolling correctness window per topic — harder questions surface as confidence builds, weaker areas resurface on a Leitner-style schedule.
- On-demand explanations via Claude Haiku — exam-relevant, referencing AWS documentation. Cached after first generation so cost per question approaches zero at scale.
- Built on Next.js, Supabase, and Vercel. Designed to be maintainable and extendable by a team, not just the original author.
Outcome
Actively used for AWS certification prep across the team, with multiple certificates earned to date.