Definition ∞ Modular components are distinct, self-contained units of software or hardware designed to perform specific functions within a larger system. In blockchain, this refers to architectures where different functionalities, such as execution, data availability, and consensus, are separated into independent, interchangeable modules. This design approach allows for greater flexibility, upgradeability, and specialization within decentralized networks. It promotes system resilience and ease of development.
Context ∞ The concept of modular components is central to the development of next-generation blockchain architectures, particularly in the context of “modular blockchains” and layer-2 scaling solutions. The debate centers on optimizing the balance between modularity benefits and potential overheads in communication between components. This design philosophy is considered key to achieving long-term scalability and adaptability for decentralized systems.