Consul KV is a key-value store that can be used to manage feature toggles in an application. Using Consul KV allows developers to conditionally deliver features to users and track, manage, and update toggles in a single location. The Consul client can be deployed on the same node as the workload to retrieve values from Consul KV at runtime without restarting the application. Feature toggles can be used for release toggles to hide releases, experimental toggles for A/B testing, and operational toggles for rolling back problematic changes. Consul watches can monitor modifications to toggle key prefixes, while access control lists (ACLs) can prevent unauthorized changes to flags and namespaces can further isolate access by teams. For production scale, consul-template can be used to write values from Consul KV to a file, allowing the application to reference cached values even if it cannot reach Consul.