Definition ∞ Subnet Architecture describes a network design where a larger blockchain network is divided into smaller, interconnected sub-networks, each capable of operating independently while still benefiting from the security of the main chain. These subnets can have custom rules, validators, and virtual machines, allowing for specialized functionality and improved scalability. This approach enables the creation of application-specific blockchains that maintain interoperability within a broader ecosystem. It offers a modular way to expand network capacity.
Context ∞ The discussion around subnet architecture highlights its role in addressing the scalability and customization limitations of monolithic blockchains. A key debate involves balancing the decentralization of individual subnets with the overall security and cohesion of the main network. Future developments are focused on optimizing cross-subnet communication, enhancing the flexibility of subnet customization, and attracting diverse applications to leverage this modular design for specialized and high-throughput operations.