Continuous quality replaces traditional quality assurance approaches with a more adaptive strategy suited for modern business. Effective communication across disciplines and teams is critical for continuous design. Continuous design presents principles for useful customer conversations, expanding expectations beyond software and services to include failures, successes, internal and external journeys, and design and operations. Promise theory provides a model for complex digital systems by focusing on soliciting promises rather than enforcing obligations, unifying design, operations, and validation around keeping promises made.