The "fork" is rarely a 1:1 copy. Developers customize the V3 engine to fit specific chain architectures or niche market needs:

Advanced forks include "hooks" (pioneered by V4 designs) that allow the protocol to execute custom code at specific points during a swap, such as providing a discount to DAO members or routing a portion of the fee to a localized treasury. Conclusion

Developers often replace static fees with "Dynamic Fee" controllers that increase swap costs during high volatility to protect LPs from impermanent loss.