That is the whole definition. Three parts. One job. Clear contract. Composes cleanly.
In a kitchen, salt is a primitive. A sharp knife is a primitive. Mise-en-place is a primitive. Nobody confuses a knife with the dish. The chef's skill is not in inventing new tools. It is in composing reliable tools at speed.
In your work, a keyword brief is a primitive. A title-tag rule is a primitive. A schema injection is a primitive. An internal-link audit is a primitive. A rank-tracker pull is a primitive. A GSC export is a primitive. A content brief template is a primitive. A redirect map is a primitive. A canonical decision is a primitive. None of these is "SEO." SEO is what you get when you compose them.
This is where most people get the lens wrong. They think the work is the primitive. The work is the chain. Primitives are cheap. Chains are the deliverable. And almost nobody names theirs, so almost nobody can fix theirs.
We talked about this over the weekend. You said you wanted it written down. The reason I think it lands for you specifically is that SEO is a discipline where the chain shape is already half-visible. You can almost see it when you describe your week. The lens just gives you the words to lock it in place.
That is SEO. That is law firm ops. That is a restaurant kitchen. That is a TV production. The lens is universal because operations are universal. The discipline is naming until the chain runs.
You already do most of this for clients without calling it that. The only thing you needed was the word for it. Now you have the word. Use it on yourself first.
Tell me which chain you picked when you've done it.