Vercel Integration Launch

[SaraMiteva]

Integration with Vercel is launching on February 11

Tag relevant owners here:

Product: @MattBro
Product Marketer (PMM): @SaraMiteva
Events: @Zaltsman

What are we launching?

The PostHog × Vercel integration connects PostHog feature flags and experiments directly to Vercel’s native Flags system, so Vercel can evaluate and apply them at runtime.

In practice, this means:

• Feature flags defined in PostHog are synced to Vercel Flags
• Experiments created in PostHog can be used inside Vercel apps
• Vercel evaluates flags using PostHog’s Flags SDK
• Your PostHog Project ID and key are automatically synced to Vercel environment variables.

What this enables for teams:

• Run experiments in Vercel-hosted apps using PostHog as the source of truth
• Gate features behind PostHog flags without building custom plumbing
• Keep product logic in PostHog, while Vercel handles fast flag evaluation
• Ship safely: roll out, roll back, or test variants without redeploys

Messaging

Taglines

• Your PostHog Flags just learned how to speak Vercel
• PostHog Flags, now native in Vercel

Description

The PostHog × Vercel integration lets you use PostHog feature flags and experiments directly in Vercel. Flags are managed in PostHog and synced to Vercel’s native Flags system, where they’re consumed using the Vercel Flags SDK, without custom integrations or extra plumbing.

Launch checklist

• Messaging @SaraMiteva
• Blog post @SaraMiteva
• Short video explainer
• Event planning (NYC, Boston, Amsterdam) @Zaltsman
  • Vercel x PostHog February 24, 2026 Boston @MattBro
  • Vercel x PostHog March 3, 2026 NYC @MattBro @fercgomes
  • Vercel x PostHog March 10, 2026 Amsterdam @jonathanlab @SaraMiteva
• Blog post cover @SaraMiteva to submit an artwork request
• Social post @SaraMiteva
• Short product description @SaraMiteva
• Prepare an online session for the Vercel community @SaraMiteva to collaborate with Pauline from Vercel

@SaraMiteva should share the blog, social post draft, logo, short product description to Gideon

This issue will be edited once we get more info on the expectations from our side around the community session

[MattBro]

Decisions (on/off, variant A/B, etc.) happen at the edge or during runtime, not manually in app logic

We haven't yet implemented edge config.

[MattBro]

To add:

• Your PostHog Project ID and key are automatically synced to Vercel environment variables.