In this conference talk from NDC London 2025, Glenn F. Henriksen challenges the negative perception of monolithic architectures and provides practical guidance for building well-designed, maintainable monoliths. Discover how to create efficient monolithic applications through strategic design principles including context definition, code organization, developer-friendly structuring, communication patterns between contexts, and effective data separation. Learn techniques for minimizing boilerplate code, implementing useful architectural patterns, and establishing proper testing strategies. The presentation offers concrete code examples and actionable advice for developers and architects who want to build high-quality modular monolithic applications that are scalable and enjoyable to work with. Perfect for those interested in understanding why monoliths can be a valid architectural choice when implemented correctly.