Square's product development is guided by the principle that "a seller should never outgrow Square." This forces them to build a platform that serves businesses from their first sale at a farmer's market all the way to operating in a large stadium, continuously adding capabilities to manage growing complexity.

Wiz's product team, trained at Microsoft, avoids building features that only solve for today's customer but break with tomorrow's enterprise giant. This 'infinite scale' mindset isn't about slowing down; it's about making conscious architectural choices that prevent time-consuming and costly refactoring later on.

To serve both solo developers and large enterprises, GitHub focuses on creating horizontal "primitives" and APIs first. This foundational layer allows different user types to build their own specific workflows on top, avoiding the trap of creating a one-size-fits-none user experience.

Large enterprises don't buy point solutions; they invest in a long-term platform vision. To succeed, build an extensible platform from day one, but lead with a specific, high-value use case as the entry point. This foundational architecture cannot be retrofitted later.

Avoid the trap of building features for a single customer, which grinds products to a halt. When a high-stakes customer makes a specific request, the goal is to reframe and build it in a way that benefits the entire customer base, turning a one-off demand into a strategic win-win.

While brand consistency is a benefit, the primary business impact of a well-built design system is operational efficiency. It drastically accelerates speed to market for new features and slashes onboarding time for new hires because the system's intelligence is effectively self-documenting.

Instead of large, multi-year software rollouts, organizations should break down business objectives (e.g., shifting revenue to digital) into functional needs. This enables a modular, agile approach where technology solves specific problems for individual teams, delivering benefits in weeks, not years.

Instead of waiting for experience teams to request an API, platform teams should analyze top-level business goals and proactively propose services that unlock new use cases. This shifts the dynamic from a reactive service desk to a strategic partner.

To avoid the customization vs. scalability trap, SaaS companies should build a flexible, standard product that users never outgrow, like Lego or Notion. The only areas for customization should be at the edges: building any data source connector (ingestion) or data destination (egress) a client needs.