When I look at the evolution of Uniswap, the shift from V3 to V4 is quite fascinating. The world of decentralized exchanges has kept improving, but I truly believe this upgrade is a major turning point.

First, what is V3? It introduced concentrated liquidity. In other words, liquidity providers can decide for themselves which price range to concentrate their assets in. This dramatically increased capital efficiency. It was genuinely innovative.

From there, V4 takes it one step further. It introduces a singleton contract architecture, flash accounting, and a mechanism called hooks. Essentially, it provides a modular framework that allows developers to customize how the protocol operates.

In terms of technical differences, in addition to V3’s concentrated approach, V4’s liquidity model enables more dynamic and flexible positioning. Gas efficiency has also been greatly improved, and by using transient storage and EIP-1153, it reduces on-chain costs.

Another thing worth paying attention to is customizability. Because V4 supports hooks, developers can add new features—such as limit orders and dynamic fees—without changing the core protocol. That’s truly powerful.

As for who Uniswap V3 is suited for, it’s for traders and liquidity providers who want to provide liquidity efficiently, especially people who are familiar with price range strategies. Since the structure is simple, it’s relatively approachable even for beginners. And because it’s widely adopted, there’s plenty of information available.

On the other hand, V4 is for developers who want to build and operate truly customized DeFi applications. Thanks to its modular architecture, it’s an ideal platform for innovation in the DeFi space. However, it’s also true that it requires a fairly deep technical understanding.

When it comes to gas efficiency, V4 is overwhelmingly advantageous. By leveraging transient storage and EIP-1153, it can significantly reduce transaction costs.

In V4, on-chain limit orders are also supported through a modular hook system, so developers can implement functionality without modifying the core. I think this is a genuinely user-friendly design.

Which one to choose ultimately depends on your needs and technical level. If you want simplicity and stability, choose Uniswap V3; if you’re pursuing customization and optimization, choose V4. Both are excellent protocols, but they’re suited to different use cases.