You can create transactions that deploy smart contract calls on any EVM compatible blockchain. The contract call is processed as a standard EVM raw transaction, and subject to policy governance and MPC signing.
For more details, see Deploy an EVM smart contract.
You can also use a raw transaction to sign a message or transaction, for example, when signing transactions on a blockchain not supported by Utila. You serialize the payload, pass the encoded hash for signing (receiving the ECDSA or EdDSA signature), and then self-broadcast the signed raw transaction on the customer side.
Also, check out the article Interact with smart contracts.