> ## Documentation Index
> Fetch the complete documentation index at: https://docs.avina.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom AI Signal → LinkedIn Ad Audience

> Push AI-qualified target companies into a LinkedIn ad audience for always-on retargeting.

**Signal:** [Custom AI Signal](/signals/custom-ai-signals) (e.g., *"Companies publicly evaluating AI platforms for customer support"*)
**Filter:** ICP Fit = A or B
**Action:** Add matched companies to a LinkedIn ad audience (via HubSpot)

## Why it works

Custom AI signals catch intent that no built-in signal can: earnings-call mentions, executive posts about a pain point, blog announcements, industry trend coverage. Retargeting these companies with LinkedIn ads keeps your brand top-of-mind with their buying committee while your SDRs work the 1:1 motion in parallel — every impression reinforces the sequence landing in the inbox.

## Setup

1. [Create a Custom AI Signal](/signals/custom-ai-signals) describing the intent you want to track. Be specific — the more concrete the prompt, the cleaner the audience.
   * Example prompt: *"Companies whose executives have publicly discussed evaluating AI platforms for customer support in the last 60 days."*
2. [Activate the signal](/features/ai-signals-agent#preview--activate) and use **Preview** to confirm the agent is finding the right companies before going live.
3. [Create an automation](/features/automations) triggered by the Custom AI Signal.
4. Add a filter: **ICP Fit = A or B** so only qualified accounts enter the audience.
5. Set the action: **Add to ad audience** → select your LinkedIn ad audience (synced via [HubSpot](/integrations/hubspot/overview)).
6. Activate.

<Tip>
  Pair this play with a [pricing page visitor sequence](/guides/sample-plays/pricing-page-sdr). Ad impressions warm the account up; the SDR sequence converts the visitor who clicks through.
</Tip>