Vercel has announced Edge Config v2, a ground-up rewrite of its globally distributed key-value store for feature flags, A/B tests, and runtime configuration.
Sub-300ms Global Propagation
The new replication layer uses CRDT-based synchronization across Vercel's 40+ edge regions, with typical write-to-read propagation measured at under 300ms globally — fast enough for real-time kill switches and emergency config changes.
Strong Read-After-Write in the Same Region
Within a region, reads immediately see local writes — removing a common footgun where feature flag toggles didn't appear to take effect immediately during testing.
Webhooks and Audit Log
Every change emits webhook events and is recorded in a tamper-evident audit log retained for 90 days on the Pro plan, 1 year on Enterprise. Integrations with LaunchDarkly, Statsig, and Unleash can mirror values bidirectionally.
Edge Config v2 is live for all new Edge Config stores; existing stores can migrate via dashboard without downtime.
