From Investing.com:

Vitalik Buterin and Daniel Wang propose classifying layer-2 scaling solutions in Ethereum as “strong” rollups and “light” validiums. The system aims to balance security and scalability within the network. This comes ahead of the Ethereum Merge upgrade, with rollups emphasizing security and validiums prioritizing scalability. The distinction is crucial for the upgrade’s success and the future scalability of Ethereum.



Read more: Ethereum leaders propose classification for layer-2 solutions By Investing.com