Free tier engineering
Building a free tier looks easy, just turn off some features and let people in. The infrastructure cost, abuse load, and conversion design are most of the actual work.
Adding a free tier seems like a marketing decision. Then your free users hit your infrastructure at scale, your abuse team gets larger, your conversion funnel becomes complex, and the team realizes the free tier was a real engineering project with marketing flavor.
What you’ll actually build
- Usage limits that hold up at 10× the expected volume.
- Abuse detection, bots will find you fast.
- Conversion prompts that don’t degrade the free experience too aggressively.
- Billing flows that handle free→paid transitions cleanly.
When the free tier earns its cost
When the network effect of free users helps paid users. When the free-to-paid conversion is genuinely high. When the alternative (no free tier) costs more in unsigned deals than the free tier costs in support. None of these are obvious before launch; some companies discover their free tier is a net cost two years in.
A free tier is an engineering bet on conversion. Underwrite it that way.