Lessons from running our own SaaS

From Internal Tool to High-Growth SaaS

AI Greentick began as an internal experiment to manage our own client communications. Today, it operates as a fully fledged WhatsApp marketing command center handling massive daily message volumes. Scaling this product taught us invaluable lessons about infrastructure and user experience.

1. Webhooks are Fragile; Queues are Resilient

In the early days, direct webhook processing caused bottlenecking during peak broadcast hours. Migrating to a robust event-driven architecture utilizing dead-letter queues ensures zero message loss even during upstream API outages.

2. Onboarding is Everything

We realized that no matter how powerful your AI chatbot features are, if the WhatsApp Business API onboarding takes more than 10 minutes, users drop off. We invested heavily in a seamless 3-click OAuth flow.

"Your software architecture is only as successful as your user onboarding funnel."

Summary

Building SaaS requires an equal balance of relentless infrastructure optimization and obsessive customer empathy. Keep your feedback loops tight and your server queues robust.