Nico Thomas, a platform engineer at SEITENBAU, discusses how his team developed a flexible and reusable platform using Pulumi to support over 20 diverse projects with varying technology stacks, infrastructure requirements, and operational models. Unlike traditional platform engineering, which often focuses on a single product, SEITENBAU faced the challenge of accommodating a wide range of independent government and private sector projects, each with unique needs. To address this, they adopted a "buffet" approach rather than a one-size-fits-all solution, allowing teams to select from a variety of pre-configured, production-ready components tailored to their specific requirements. Using Pulumi and Python, they constructed a modular architecture with multiple Pulumi stacks to manage complexity and empower team autonomy, creating a component library that simplifies infrastructure management by offering high-level components that encapsulate complex patterns. This strategy has enabled SEITENBAU to efficiently serve its diverse projects while maintaining flexibility and consistency, illustrating the benefits of a customizable platform over a standardized one.