What is the difference between the V1 and V2?

Could you please clarify the distinction between the V1 and V2 versions? I'm particularly interested in understanding how they differ in terms of functionality, performance, and any notable improvements or features that have been added in the V2 version. Additionally, are there any known limitations or drawbacks of the V1 that have been addressed in the V2 iteration? It would be greatly appreciated if you could provide a comprehensive comparison between the two.