# DRS Knowledge Map > Open Knowledge Format concepts and relationships for drs. ## Concepts - [DRS architecture](https://manojlds.github.io/drs/architecture.html): High-level system architecture of DRS — CLI, workflow engine, runtime, agents, and platform integrations. - [DRS configuration](https://manojlds.github.io/drs/configuration.html): How DRS loads configuration from .drs/drs.config.yaml, environment variables, and CLI overrides. - [Platform integrations](https://manojlds.github.io/drs/integrations.html): How DRS integrates with GitHub, GitLab, and CI/CD systems. - [Maintenance workflows](https://manojlds.github.io/drs/maintenance-workflows.html): DRS workflows for repository upkeep — changelog updates, review-issue fixes, agent guidance refresh, and release changelog finalization. - [Migrating from DRS 4.1 to 5.0](https://manojlds.github.io/drs/migration.html): Required changes and behavioral differences when upgrading from DRS 4.1 to 5.0, including removed commands, the CLI-only package, split GitHub review posting, and changed defaults. - [Pi runtime and agents](https://manojlds.github.io/drs/pi-runtime.html): How DRS runs the Pi SDK in-process, discovers agents, resolves models, attaches skills, and exposes custom tools. - [DRS repository wiki](https://manojlds.github.io/drs/quickstart.html): Entry point for the DRS wiki. Learn what DRS does, how it is organized, and where to find the key concepts. - [Repository wiki](https://manojlds.github.io/drs/repository-wiki.html): Generate and maintain an OKF v0.1 repository wiki bundle with deterministic delta fingerprints, model-free checks, and CI validation. - [Review workflows](https://manojlds.github.io/drs/review-workflows.html): How DRS performs code reviews from local diffs, GitHub PRs, and GitLab MRs, including change sources, findings, fix verification, and posting. - [Temporal execution](https://manojlds.github.io/drs/temporal-execution.html): Durable workflow execution through Temporal, including worker deployment, workspace modes, and queries. - [Testing and quality gate](https://manojlds.github.io/drs/testing.html): How DRS is tested, including the mandatory quality gate, unit tests, and opt-in Temporal smoke tests. - [Workflow engine](https://manojlds.github.io/drs/workflow-engine.html): How DRS compiles, validates, schedules, and executes YAML workflows, including built-in actions and control nodes. ## Explore - [Concept graph](https://manojlds.github.io/drs/graph.html): Interactive view of relationships between concepts. ## Raw OKF bundle - [Bundle index](https://manojlds.github.io/drs/okf/index.md)