Entity
A specific real-world thing an engine can identify and reason about, such as a company, a person, a product, or a place, distinct from the words used to describe it.
Search used to be about matching words. AI engines try to understand things. The difference between a word and a thing is the difference between a keyword and an entity.
What an entity is
An entity is a specific real-world thing an engine can identify: a company, a person, a product, a place. It exists separately from the words people use to describe it.
Your business is an entity. "Affordable plumber in Austin" is a phrase. An engine that thinks in entities tries to connect that phrase to a real business it recognizes, not just to pages that happen to contain those words.
The reader here is a machine trying to answer "what thing is this, and what do I know about it."
Why engines think this way
Words are ambiguous. "Apple" is a fruit and a company. An entity model lets an engine separate the two and attach the right facts to each. Once it identifies your business as a distinct entity, it can gather everything it knows about you, from your site and from the rest of the web, and reason about it as one coherent thing.
That is why two sites with similar words can be read very differently. One reads as a recognizable entity with a clear identity. The other reads as a wall of text the engine cannot pin to anything.
The old way and the new way
The old way optimized for keywords: get the right phrases on the page so a string match would fire.
The new way is about being a thing an engine can recognize and trust. Keywords still describe you, but the engine is asking a harder question: which real-world entity is this, and how confident am I about its facts.
The damaging admission
Becoming a recognized entity is not a switch you flip, and nobody can promise an engine will recognize you. You can make yourself easier to identify with a consistent name and clear structured data, but recognition is built from signals across the web you do not fully control.
And entity clarity alone does not win you an answer. An engine can know exactly who you are and still recommend a competitor whose pages it reads more clearly. Identity is necessary, not sufficient.
How to check where you stand
The practical question is whether engines can read your site cleanly enough to attach facts to you at all. That is measurable.
Run a free scan on any URL to see how clearly engines read your pages, or read how AI engines decide what to recommend for the bigger picture.