Culture plays a pivotal role in shaping a company's infrastructure, tooling, and processes, significantly impacting how quickly a team can operate, as seen in the author's experience at Facebook. Initially, Facebook's culture was encapsulated by the motto "Move Fast and Break Things," encouraging rapid iteration and proactive problem-solving without sacrificing quality, although it later evolved to emphasize stability. The company employed sophisticated tools like Gatekeeper and QuickExperiment to control feature rollouts and gather data-driven insights, facilitating safe yet swift software development. This approach, combined with a blameless culture and a focus on continuous improvement, allowed Facebook to deploy features quickly and learn from user interactions. The author later found similar values at Statsig, highlighting the importance of providing teams with the necessary tools to innovate and iterate efficiently, thereby democratizing such capabilities for other companies. The text underscores the value of an experimentation culture and the evolution of A/B testing as critical components for building successful products.