What is the difference between dYdX V3 and v4?

Could you please elaborate on the key differences between DYDX V3 and v4? How do they differ in terms of functionality, scalability, or user experience? Are there any significant upgrades or new features introduced in v4 that weren't present in V3? Additionally, how do these changes impact traders and liquidity providers utilizing the platform? Understanding these distinctions is crucial for users to make informed decisions when leveraging the latest advancements in decentralized finance.