Here's a clear, up-to-date guide for "How to Create Custom Audiences for Facebook Ads in 2025" — ideal for a post, guide, or video script:

🎯 How to Create Custom Audiences for Facebook Ads in 2025
Want better ROAS? Custom Audiences are your most powerful weapon. Here's how to build them strategically in 2025, despite privacy changes and tracking limitations.

📌 What Are Custom Audiences?
They're audiences built from people who already interacted with your brand—via website visits, videos, purchases, or customer lists.

1. Use First-Party Data (Still King in 2025)
Upload:

Customer email/phone lists

Newsletter subscribers

Past purchasers

Steps:
👉 Go to Audiences > Create Audience > Custom Audience > Customer List
👉 Upload CSV + match identifiers (email, phone, etc.)

2. Website Traffic (via Pixel or CAPI)
Track site visits, specific pages, or time-on-site.

✅ Best with server-side Conversions API (CAPI) for accurate tracking post-iOS changes.

Examples:

All site visitors in last 30 days

People who viewed product pages but didn't buy

Users who visited "Pricing" or "Checkout"

3. App Activity (if you have an app)
Target users who:

Installed but didn't subscribe

Added items to cart

Hit certain milestones

4. Video Views (No Pixel Needed)
Perfect for iOS users or low-data environments.
Create audiences based on:

3s/15s/ThruPlays

25%, 50%, 95% watched

Pro Tip: Retarget viewers with deeper content or direct offers.

5. Facebook & Instagram Engagement
Target people who:

Liked/commented/shared your posts

Clicked your profile

Messaged your Page

Saved an IG Reel

Highly valuable post-privacy shift.

6. Lead Form Engagement (Instant Forms)
Re-engage people who:

Opened the form but didn't submit

Submitted but didn't take next action

💡 Bonus: Combine with Lookalike Audiences
Turn any Custom Audience into a Lookalike Audience to find cold leads that behave like your best customers.

💳 Ad Spend Pro Tip
Managing Custom Audiences across multiple clients or ad accounts?
Use virtual credit cards from Exocards (https://exocards.com) to stay organized, control spend, and reduce risk.