A Blockchain Aggregation Layer is a layer built on top of multiple blockchains to enhance their interoperability and efficiency. It acts as a bridge, allowing different blockchain networks to communicate and share data seamlessly.

By aggregating data from various blockchains, this layer enables more efficient transaction processing and can lower fees. It allows users to access services, assets, and information from multiple chains without needing to switch between them. This is especially useful as the number of blockchains continues to grow, creating a more fragmented landscape.

Additionally, Blockchain Aggregation Layers can enhance scalability. They can process transactions off-chain and then verify them in bulk on the main blockchain, reducing congestion. Overall, this layer aims to improve user experience, streamline operations, and make blockchain technology more accessible for various applications.