“If you go to Zapier and check the most common zaps, you will see pairs of two applications — for example QuickBooks and Sheets. If you're able to build that in just one piece of software that does everything, you're going to be solving a huge pain point for customers.”

Zapier's most popular zap pairs reveal hundreds of underserved integration gaps

Asked where he'd look for new micro-SaaS opportunities today, Leandro pointed to Zapier's popular automation pairs as a signal for unmet demand. High-volume multi-step zaps indicate workflows painful enough that users cobbled together a workaround — a gap a focused app can fill cleanly.