Playable labs for real AWS systems

Learn AWS.Make it react.

Build DynamoDB access patterns and AppSync APIs in short, visual missions. Change real code, watch the system respond, and learn why it works.

30+

Playable missions

Live

System feedback

Local

Saved progress

DynamoDB · AppSync · GraphQLDiscover

Choose your path

Two systems.
One way to learn.

Learn the key mental model, then design access patterns, work with indexes, and coordinate safe writes through guided database missions.

AWS SDK v3 · Primary keys · GSIs · Transactions · Pagination

Build a visible GraphQL request path, connect DynamoDB, test identities and failures, then explore advanced integrations and operations.

GraphQL · JS resolvers · Authorization · Realtime · Operations

How it works

Every concept becomes an editable challenge, not another passive video.

Small, focused checks show what works and what still needs attention.

Progress from API fundamentals to patterns used in production systems.

Start learning today