Great practical guide. As a developer who has worked on multiple custom business systems for clients in KSA, I really appreciate how this article focuses on the buyer’s decision-making process instead of just selling “custom development.” One point I’d add from the technical side: the real complexity often starts after the requirements are gathered. Handling Arabic RTL properly, ZATCA Phase 2 e-invoicing integration, local payment gateways (especially mada), and data residency expectations can significantly impact architecture and timelines. These are not just “features” — they affect database design, API structure, and even how you handle offline scenarios. Also, many buyers underestimate the importance of clean, maintainable code and proper documentation. A well-built custom tool should still be easy for another development team to take over later. That long-term ownership mindset is what separates a good custom solution from an expensive technical debt.