# Core Concepts This repository contains reference documentation on the core concepts of the Cosmos SDK. 1. [`BaseApp`](./baseapp.md) 2. [Transaction](./transactions.md) 3. [Context](./context.md) 4. [Node Client](./node.md) 5. [Store](./store.md) 6. [Encoding](./encoding.md) 7. [gRPC, REST and Tendermint Endpoints](./grpc_rest.md) 8. [Command-Line Interface](./cli.md) 9. [Events](./events.md) 10. [Telemetry](./telemetry.md) 11. [Object-Capabilities](./ocap.md) 12. [RunTx recovery middleware](./runtx_middleware.md) 13. [Simulation](./simulation.md) 14. [Protobuf documentation](./proto-docs.md) 15. [In-Place Store Migrations](./upgrade.md) After reading about the core concepts, check the [IBC documentation](../ibc/README.md) to learn more about the IBC core concepts and how to integrate IBC in your application.