Begin with selecting an appropriate platform strategy for desktop apps: native across Windows, macOS, and Linux, or cross-platform frameworks, and the distribution approach. Defining a solid MVP and an early prototype helps verify workflows, performance requirements, and the overall UX on real devices.
As the product evolves, reliability, update processes, and packaging become priorities. Thoughtful management of file systems, permissions, offline support, and integrations (device APIs, peripherals, enterprise authentication) ensures dependable daily operation, while an update system and crash reporting streamline ongoing maintenance.