The finished kitchen uses all the tricks of Eevee to get physically realistic lighting, with the added benefits of real-time feedback. If this scene was for a prospective client, you could fly through the scene and show them custom angles, without the burden of overnight renders. These concepts instantly translate to game engines, such as Unity and Unreal. Lastly, scenes such as these work in parallel with both Eevee and Cycles.
Your next step might be to render this in Cycles for the specific features it has that Eevee doesn't—IES lights, micro-displacement, denoising, compositing, and other advanced techniques. When you find yourself in a room with beautiful lighting, be sure to study it from both a physical and artistic standpoint. Different bulbs and equipment produce vastly different results, but the human element of how these are arranged is a major aspect...