Symbiotic Core (https://github.com/symbioticfi/core) provides a modular onchain framework for creating flexible staking solutions, including collateral choice (native tokens, restaked assets, or multi-asset), as well as reward, slashing and redistribution logic. Symbiotic Relay serves as an extension to the Symbiotic Core that radically simplifies integrating Symbiotic's universal staking primitives and enables leveraging stake across any execution environment, expanding the design space for multichain-native decentralized protocols.