One agency or two, and how the work actually splits.

The pitch for a separate AEO agency is that this is a new discipline requiring new expertise. There is some truth in it and a lot of commercial convenience, and the practical answer depends less on the theory than on how much of the underlying work is already happening.

Where the work genuinely overlaps

Crawlability, site speed, structured data, content quality, internal linking and authority building are shared. So is local profile work. That is the majority of both scopes.

Two agencies working this list independently will duplicate audits, contradict each other on implementation, and both bill for the same structured data deployment. Development teams caught between them tend to do neither set of recommendations.

Where it genuinely differs

• Entity consistency work, which SEO scopes have historically underweighted.
• Citation building on non-link sources, which is outreach with different targets from link building.
• Assistant monitoring, which requires a routine nobody was running before.
• Passage-level content structuring, which differs from writing for rankings.

That is a meaningful list, and it is smaller than a second retainer implies.

Where each agency's reporting diverges

The clearest way to see the split is in the monthly report. An SEO report is built around rankings, organic sessions and conversions from organic. An AEO report is built around citation rate on a fixed prompt set, share of voice against competitors, presence on the sources assistants cite, and the accuracy of what assistants say about you.

Those numbers move for different reasons and on different timescales. Organic traffic can fall while citation rate rises, because AI summaries absorb clicks that used to reach you; Pew measured click-through on results pages with an AI summary at roughly half the rate of pages without one. A single agency can report both honestly. Two agencies tend to each report the number that flatters them.

How to decide

If your current agency is doing the fundamentals well, ask them to add the four items above and pay for the increment. Most competent agencies can, and the ones who cannot will tell you.

If your current agency is not doing the fundamentals well, changing agency solves more than adding one. Two agencies neither of whom has fixed your technical foundation is the worst available outcome.

A second specialist makes sense mainly at enterprise scale, where the volume of entity and citation work genuinely fills a separate team's time.

A practical split if you do use two

Sometimes two agencies is the reality: an incumbent SEO agency with a long contract, and a specialist brought in for AI search. If so, write the boundary down before work starts.

• The SEO agency owns technical fixes, site structure, structured data deployment and on-page content.
• The AEO specialist owns the prompt set, monitoring, entity audit findings and third-party citation outreach.
• Structured data and content changes proposed by the specialist go through the SEO agency's implementation queue, so there is one route to your developers.
• Both report from the same baseline date and share one source list.

Without that, you will pay twice for the schema audit and your developers will receive two tickets for the same page.

Questions that reveal whether your current agency can add AEO

Ask your current SEO agency three things. Which assistants have you checked for our brand, and what did they say? What does our entity footprint look like: every name, address and phone number variant on the web? Which non-link sources do assistants cite in our category?

If they can answer those within a week, they can almost certainly absorb the AEO work. If the answers are vague after a week, the gap is real, and that is the point at which a specialist or a change of agency makes sense.

Frequently asked questions

Do I need separate SEO and AEO agencies?

Usually not. The majority of both scopes overlaps, and splitting them across two agencies produces duplicated audits, contradictory recommendations and double billing for the same work. Adding the AEO-specific increment to a competent existing agency is normally better.

What is genuinely unique to AEO work?

Entity consistency, citation building on non-link sources, assistant monitoring, and passage-level content structuring. Everything else is shared with sound SEO.

When does a separate AEO specialist make sense?

Mainly at enterprise scale, where entity and citation work across many brands, regions or product lines genuinely fills a separate team's time.

Will AEO work conflict with my SEO?

Not when it is done properly. Clear answers, consistent entity data, valid structured data and third-party mentions help rankings as well as citations. Conflicts come from two agencies making uncoordinated changes, not from the disciplines themselves.

Should my SEO agency report AI visibility?

Yes, at least a basic citation check on your most important buyer questions each month. If they cannot, ask for it as a scoped add-on before hiring a second agency.