Enzyme is a platform that aims to provide a structure for managing crypto-related assets in a decentralised manner. That is, Enzyme brings together various applications from the DeFi world on a single platform and allows us to interact with them in a simplified and automated manner.

This final point, automation, is the result of the development of own smart contracts that carry out tasks that would otherwise be performed "manually" by the user. In this regard, consider the following:
DAI can be deposited into a compound via an enzyme.
Instead of you having to claim the reward COMP tokens, a smart contract does it for you.
Your COMP will be automatically deposited in another platform, which you must specify in advance, thanks to another contract.
Enzyme, obviously, is an application that allows users to create their own investment strategies in order to maximise their return from the DeFi ecosystem.