A Rollup Protocol is a layer 2 scaling solution that enhances the efficiency of blockchain networks. It achieves this by bundling multiple transactions into a single one, which is then recorded on the main blockchain. This process reduces congestion and lowers transaction fees, making operations faster and more cost-effective.There are two main types of rollups: optimistic rollups and zero-knowledge rollups. Optimistic rollups assume transactions are valid by default and only verify them if challenged, which helps maintain speed. Zero-knowledge rollups, on the other hand, utilize cryptographic proofs to confirm the validity of transactions without revealing the details. By using rollup protocols, blockchain networks can handle a higher volume of transactions without sacrificing security. This makes them increasingly popular for decentralized applications and financial services, where high throughput and low cost are essential for user experience. Overall, rollup protocols strive to balance scalability and security, allowing blockchain technology to grow without overwhelming the base layer.