L2s matter — skyscraper technology is essential to scaling any city — but they are not the end of the story. L2s are an “and”, not an “or”.

To address this, the community chose a rollup-centric approach. The idea is simple: Instead of hosting all applications on Ethereum, the focus is on rollups that offer faster, cheaper transactions while still settling back on Ethereum. As a result, you get faster, cheaper transactions, but still keep Ethereum’s security.