MVP

You might say

Let's start with the smallest version that proves the core feature works instead of building everything at once.

The smallest real product or experiment that tests a key product assumptionTo test whether freelancers will pay for payment reminders, a team can charge real customers and deliver the reminders manually first. An MVP gathers decision-worthy evidence; it is not a carelessly stripped-down full product.
Know first
Minimum Viable Product
Further reading