A construction site on an alien planet is like a hive – everyone knows what to do, everyone has a specific role to play. There are risks and unknowns. Erection of a building under these circumstances requires careful planning, selection of materials, coordination, and teamwork. Similar rules apply in software development – engineers, product owners, designers, and quality assurance specialists are focused on their specific tasks. But the most important role is played not by developers; it’s reserved for the client. Here’s how the client’s responsibilities in product development translate into working application.