No, a website is not an absolute prerequisite. A business can have a public presence through other public sources even without its own site. However, if you want to work systematically on AEO, your own website is usually the strongest foundation because it gives you greater control over content, updates, and technical access.
What can someone find about your business without a website?
A business can have a public presence even without its own site.
Its information may exist on:
- Google Business Profile,
- professional directories,
- marketplaces,
- booking platforms,
- social media,
- third-party publications,
- other public pages.
This means that the absence of a website does not automatically make a business "invisible".
The main drawback is that you have less control over what gets published and how it is presented.
On a third-party platform you can fill in only the fields it allows you to. The page's format, the depth of the information, the technical capabilities and the platform's rules are not determined by you.
What does your own website give you?
The main difference is that you gain a public source you can shape around your business's real needs.
You can publish and update:
- your services or products,
- the areas you serve,
- contact details and hours,
- conditions, restrictions or practical information,
- answers to frequently asked questions,
- detailed pages for topics that do not fit in a third-party platform profile.
You also have greater technical control: you can organize pages, improve internal linking, fix crawling or access issues, and use structured data where it genuinely fits.
For Google's AI search features, a page must meet Google Search's technical requirements and be eligible to appear in Search. Other AI systems may use different crawlers and access mechanisms. Structured data — the technical markup that describes a page's visible content — can help systems understand content, but there is no special AI schema requirement and it does not guarantee inclusion in AI-generated answers. If you want more details, see the guide to schema markup.
Why does controlling the information matter?
Let's take a real question:
"I'm looking for a cleaning company in Thessaloniki for my business's offices. Which companies say they handle professional spaces and how can I contact them?"
An AI system that uses public sources may rely on information from a website, Google Business Profile, professional directories or other public pages.
If the company has only a short listing on a third-party platform, only the business name, phone number and location may be available.
On its own website it can publish, provided they are actually true:
- that it serves professional spaces,
- which areas it covers,
- which types of spaces it handles,
- how the first contact is made,
- which information is needed in order to give a quote.
This creates a richer set of specific, verifiable information about the business.
If, for example, there is no public statement that the company serves commercial premises, such a conclusion may appear without clear supporting evidence. That is why it matters for the business to publish specific, current information itself.
This does not mean that an AI system will necessarily use the website or that it will recommend the business. It means that the business has the ability to publish more complete and accurate information itself.
How does a website work together with third-party sources?
You don't need to treat the website and third-party sources as alternative solutions.
For a local business, for example, the Google Business Profile can complement the site with location, hours, contact details, photos and other practical information. Likewise, directories, platforms or third-party publications may add information that you don't fully control.
A practical model is to maintain your own controlled source and, where relevant, keep other public sources accurate and consistent with it.
How big does the website need to be?
There is no minimum number of pages required for AEO.
A small business can start with a few well-organized pages, as long as they cover the basic information the customer really needs.
For example:
- who the business is,
- what it offers,
- who it is aimed at,
- where it serves,
- how someone can get in touch,
- which basic questions need an answer.
If a topic needs a separate and substantial explanation, then it deserves its own page. There is no reason to create many pages just to "do AEO".
If the website itself needs to be rebuilt, see what the web design base includes.
What if you only have Instagram, Facebook or Google Business Profile?
You can already organize the information that exists there better.
Check:
- whether the contact details are correct,
- whether the business description matches what it actually offers,
- whether the hours and location are updated where needed,
- whether there are contradictions between the different platforms.
This is useful regardless of whether you will create a website right away.
If, however, the business needs to explain more than what fits on these platforms or wants greater control over the public information, then a website becomes a logical next step.
Whether you have a website is only one part of readiness. You also need correct public information, content that can be accessed and processed properly, and real customer questions worth answering.
So, do you need a website?
No, in order for any public information to exist around your business.
Yes, if you want your own controlled base to publish, organize and systematically evolve the information.
This is the essential reason a website has value in the work around AEO: not because AI systems necessarily "trust" a corporate site, but because it gives you more control over what you can publish and maintain properly.
If you want us to look at what is missing from your own public presence, we start from the sources that already exist and from what you can control.
The work around AEO can help make a business's public information more complete, accurate and consistent.
It does not guarantee appearance, mention, citation, recommendation or a specific position in ChatGPT, Gemini, Perplexity, Google AI Overviews or another system.