The term "runtime-driven model" in the context of blockchain and cryptocurrency typically refers to a system or architecture where the operational logic, execution environment, or governance is determined and managed at the runtime layer of the protocol. For example, in the Solana blockchain, the "program runtime" is the part of the Sealevel Virtual Machine (SVM) that allows validators to execute programs (smart contracts). Upgrades to the runtime can improve cost efficiency and expand the design space for developers, enabling more complex and flexible applications1.

Additionally, in some blockchain protocols, the runtime descriptor includes a "governance model" field, which specifies how the runtime (the environment where smart contracts or decentralized applications execute) is governed. This can include models where governance is handled by an entity, by the runtime itself, or by the consensus mechanism2.

In summary, a runtime-driven model emphasizes the importance of the runtime environment in determining how applications are executed, governed, and upgraded within a blockchain system. This approach can lead to greater flexibility, scalability, and adaptability for decentralized applications and protocol upgrades12.