As rollups and scaling solutions have matured, especially on top of Ethereum, they have enabled a new generation of apps and use cases to flourish. With faster speeds and lower costs they have unlocked greater adoption of blockchain. But L2 rollups are just the first piece of the puzzle; now the space is looking beyond this with an eye to true mass adoption. To unlock use cases in gaming, TradFi, digital ID, and many others, including bringing Web2 business to crypto, many teams in the Ethereum ecosystem are building modular blockchains, referred to in many different ways as Supernets, hyperchains, Layer 3, just to name a few. These have the potential to propel adoption to the next level as they allow limitless scaling of transactions, sub-cent/negligible transaction costs, and also a level of customization that large organizations such as Visa or Activision Blizzard will require if they are to build on top of Ethereum. The tech stacks allow that allow developers to build these custom blockchains to enable what will most likely define the next wave of adoption in the coming bull market.