Scalability is one of the largest problems still facing crypto. The scalability trilemma is that no blockchain currently exists that has all of the following three properties: security, decentralization, and speed. Ethereum and Bitcoin have security and decentralization, but lack speed. Solana has security and speed, but lacks on decentralization.

A number of scalability solutions have been proposed, from sharding to side chains. In today's episode of Crypto Concepts, we'll discuss why layer 2 solutions exist, how they benefit the Ethereum network, and how rollups work!