This is where you shape how AI behaves.
Prompts, system prompts, Custom GPTs, Claude Projects, Gemini Gems, and similar tools all belong in this layer because they provide instructions, context, and guidance for the AI. They vary in capability and complexity, but they all influence how the AI approaches its work.
Think of this as the recipe system. You're not changing the chef. You're helping define how the chef should prepare the meal.
Most creators, coaches, and entrepreneurs will get the majority of their results from this layer alone.