Tight Envelope (wrong name?)
Sketch of the envelope, layered on in 3D-ish
Core ideas are about keeping water away from structural members, providing an airtight seal, reducing thermal breaks, and superior insulation properties.
Long ago, we used to attach our cladding directly onto the structural members of the house and call it a day. Water, bugs, allergens, and pollutants were free to bleed into our homes. We call those houses drafty.