Twilio's UX Infrastructure team aimed to create a cohesive design language for its product suite, aligning navigation experiences across products. They conducted research with ~50 customers, who rated cohesion among Twilio products at 2.47 out of 5, and found inconsistencies in navigation designs. The team created a UI kit with React components and Figma assets to unify navigation looks and feels across Console, Segment, Flex, and SendGrid, accommodating existing features and functionalities. They established common elements, designed flexible components, and conducted stakeholder reviews for approval. With unanimous support from ~20 stakeholders, the redesigned navigation is set to roll out to Twilio products in the coming months, with collaboration on establishing design subsystems for product teams' navigation.