In order to achieve strong quality and move the business forward as a unit, developers and QA must come together and think holistically about the application from a user perspective, including positive and negative scenarios. Developers should take responsibility for their code and write relevant unit tests, focusing on quality rather than testing activities. To ensure this, teams can identify specific levels of quality involvement, prioritize testing activities, and communicate effectively to avoid silos and promote a shared understanding of quality ownership. By breaking down silos between development and testing, developers and QA can work together to deliver high-quality software that meets user needs and expectations.