Imagine a busy highway that's always getting clogged with traffic. To ease congestion, they decide to build a network of smaller, faster roads alongside the main highway. Fusion rollups are kind of like that for blockchains. They're a way to scale blockchains (make them faster and handle more transactions) by combining different approaches. Fusion rollups take the best features of solutions like Appchains (separate blockchains) and Shared Rollups (shared ledger) to create a potentially more secure and efficient system.
