Payment gateway integration is the engineering work that connects your product's checkout experience to the financial infrastructure that authorises, captures, and settles real money. Every SaaS subscription, marketplace transaction, and e-commerce order depends on this integration layer functioning correctly under load, recovering gracefully from failure, and maintaining PCI compliance throughout its lifecycle.

Technical debt is the accumulated gap between the system your engineering team built to ship quickly and the system your business now requires to operate reliably at scale. Every startup carries some amount of technical debt. The question is not whether it exists, but whether the business understands it well enough to manage it before it begins compounding against revenue, velocity, and team retention.

A progressive web app is a browser-based application that behaves like a native mobile app without requiring App Store or Google Play distribution. It loads through a standard URL, installs directly to the home screen, works offline, and sends push notifications. For founders evaluating how to deliver a mobile product, PWAs introduce a third architectural option alongside native builds and cross-platform frameworks like React Native.