What is Governance?
Governance is the process by which a protocol changes: who may propose, who votes, what thresholds apply, and how an approved decision reaches the contracts it modifies.
In practice
Offchain signalling on tools like Snapshot is cheap but not binding. Onchain execution is binding but slower and costlier. Most mature protocols combine both, often with a timelock so users can exit before a change lands, and a multisig or security council for emergencies.