When it comes to building strong and reliable software and creating a sustainable design, the aim should always be to reduce complexity and make the code easy to understand. This article discusses the challenges and overhead in traditional service classes and explores the shift from layered to vertical slice architecture. The author shares their experience with a strict layered architecture and why they now prefer a more flexible approach. Additionally, they highlight the importance of critical thinking and finding optimal solutions for projects. Overall, this article emphasizes the need to rethink architectural boundaries to enhance software development practices.