Ministry of Testing Meetup | Rio de Janeiro , Brazil | 18th September 2018 This presentation is about different changes that were implemented when an interdisciplinary team developing a product started adopting testing as part of their team culture. During the presentation, Claudia will share what they have learned from a testing perspective and also what other lessons were learned beyond testing that helped them build a team culture. This story is set during the process of building a multi-platform UI prototyping tool (mainly) for interaction designers. It covers a six-year period during which there have been eleven major releases and several intermediate releases. The team, fully dedicated to building the product, consists of highly qualified and experienced professionals: developers (5), interaction designers (1), visual designers (1), technical writers (1), and testers (1).