Fivetran, a data integration startup, has evolved from a five-engineer team to a 200-engineer unicorn with a focus on making business data as accessible as electricity. The company's growth and success can be attributed to its dedication to improving the reliability of its data pipeline through four distinct stages: crawl, walk, run, and fly. Key aspects of this evolution include monitoring and observability, incident management, handling source API failures, tracking changes on the source side, customer support, and building a modern data stack strategy with customers. Fivetran's commitment to reliability has enabled it to become an essential tool for businesses seeking to break down data silos and gain a holistic view of their organizations.