Distributed Validator Technology
obol network and Decentralising validation for uptime and resiliency
picture source : https://docs.obol.tech/docs/dv/introducing-charon
As shown in the picture DVT is running on obol cluster over obol network The network can be best visualized as a work layer that sits directly on top of base layer consensus. This work layer is designed to provide the base layer with more resiliency and promote decentralization as it scales. Distributed Validator Technology is an application of cryptography and consensus algorithms to enable threshold signing of a proof of stake validator's duties in a trust minimized configuration
runnig on different cluster so validation can be done between nodes and if less than 33% of the nodes in your cluster crash or go offline at the same time, your Ethereum validator can stay online. The remaining active nodes are still able to come to consensus on what to sign, and can still produce valid signatures for their staking duties. This is known as Active/Active redundancy, a common pattern for minimizing downtime in mission critical systems.
also run validation application through independently nodes can decentralization on Ethereum 2.0 or other Proof-of-Stake chains