Over the past few weeks, we have covered some of the leading projects trying to help Ethereum scale, including Polygon, Optimism and Arbitrum.
Optimism and Arbitrum have used optimistic rollups as a scaling solution, while Polygon has taken a broader approach and allows developers to choose which solution suits them best.
Yet, they are all exploring how they could use Zero-knowledge rollups (ZK-rollups) to scale Ethereum in one form or another.