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Building a 50,000-Member Online Community for a Star Network Event at Under ₹50 CPL
50,000+
Facebook Group Members
2,000+members per day
Peak Daily Joins
<₹50consistently
Cost Per Join
The Challenge
A media brand under the Star Network was promoting a major community-driven event and needed to rapidly grow a Facebook Group as the central engagement hub. The objective was not direct sales but volume-led community acquisition — filling the group with highly relevant, genuinely engaged members at scale and speed before the event window closed. Standard brand awareness campaigns would not achieve the group join metric required.
Our Strategy
We treated this as a performance lead generation campaign optimised for cost-per-group-join rather than cost-per-purchase. The strategy combined Facebook Ads with community-fit audience targeting and creatives that communicated clear membership value — exclusive content, event access, and community belonging.
Execution
Designed campaign architecture specifically optimised for Facebook Group member acquisition — a non-standard campaign objective requiring custom setup
Built custom audiences based on thematic content interest overlap aligned with the event's subject matter and regional affinity
Created ad creatives communicating exclusive value — what members would access, experience, and belong to by joining
Iterated on audience segments weekly based on cost-per-join performance data
Scaled budget rapidly on winning audiences to maximise velocity before the event date
Monitored group quality alongside volume to ensure joins were engaged and not passive
Key Takeaways
- ✦Community-building campaigns require distinct success metrics — optimising for CPL (cost per join) rather than ROAS is the right framework
- ✦Audience targeting by thematic interest overlap improves relevance and join rates dramatically over demographic-only targeting
- ✦Speed-to-scale matters for event-driven campaigns; identifying winning audiences fast is more important than creative perfection