A startup is a young company designed to search for a repeatable and scalable business model under high uncertainty, often using technology, not merely any new small business.

What is the difference between a startup and a small business?

A small business can be profitable and local on a known model (a shop, a consultancy). A startup is trying to find a model that can get much bigger, usually by changing the product until demand is obvious.

When does a startup stop being a startup?

When the model is known and the job is execution and growth, not searching. Headcount and funding are clues, not the definition.

What is a startup? Definition, vs small business, and what actually counts

A startup is a company that does not yet know how it will make money at scale — and is designed to find out fast. A bakery that wants to stay a bakery is a business. Both are allowed. Only one is a startup.

Definition

A startup is a company built to search for a business model that can scale. Steve Blank’s version still holds: a temporary organization looking for a repeatable, scalable model. If you already know the model — haircuts, plumbing, a client services shop — you have a business. Congratulations. You can skip the mythology.

Age is not the test. A five-year-old company still guessing is a startup with extra bills. A two-week LLC with a known offer is a small business with a new logo.

Startup vs small business vs project

Project: a game, a newsletter, a tool. Might become a company. Muk.gg started as a thing I shipped, not a Series A narrative.
Small business: known customers, known offer, growth that looks like more of the same. See growth strategies.
Startup: unknown which customer and offer will work. You run experiments. You expect to be wrong in public.

Venture funding is optional. Most “startups” on Twitter are consulting firms with a waitlist. Fine. Call them honestly.

What you need on day one

A target audience you can name. A problem they already have. A way to reach ten of them this week. A landing page with one promise. Not a pitch deck that says “AI-powered.”

If you cannot get a reply from a human, you do not have a startup. You have a Figma file.

How they grow (when they are real)

Search for demand. Then acquire customers in a way that can get cheaper or at least not explode. Then keep them. Then maybe raise money to go faster — not to discover whether anyone cares.

Building in public can help if you ship. It hurts if you perform the search instead of doing it.

FAQ

Do I need a co-founder?

No. You need a way to build and a way to sell. Sometimes that is two people. Sometimes it is you and an agent and a list.

Do I need incorporation?

Sooner than Twitter says if you take money or a co-founder. Later than Twitter says if you are still emailing strangers. Ask a lawyer, not a thread.

Is a newsletter a startup?

It can be a media business. It is a startup if you are still hunting the model (ads, paid, products). It is a small business if the model is known and you are executing. See why I ditched Substack for the platform piece.