The Aptos network is comprised of nodes of three types: validator node, validator fullnode and public fullnode. To participate in consensus, you are required to run both a validator node and a validator fullnode, and stake.
Also learn how to run a public fullnode on a local network and connect to either a testnet or a devnet. This section describes everything you need to stake and participate in consensus and governance. See also the external resources offered by your fellow node operators.