Decking
Decking that's still flat and solid five winters on.
Composite or timber decking, built on a joist frame set out for how you'll actually use the space, not just to fill the garden.
Raised decks get a proper substructure and balustrade, not posts knocked into the ground.
Composite boards where low maintenance matters, timber where you want the natural finish.
Drainage and ventilation built into the frame so the deck isn't sitting on wet ground.
Integrated lighting and planters built in from the start where you want them.