If you are about to sign with an AEO and digital marketing agency, evaluate it like a buyer, not a browser. Ask what outcome is guaranteed, who does the daily work, and how you can leave if it does not perform.

Search changes every minute. Ad auctions reprice on every search and AI answers rewrite themselves daily. Agencies and in-house teams still work in weekly check-ins and monthly reports, so money leaks out in between. Use that gap as your test.

How to evaluate an AEO agency

An AEO agency should prove visibility where answers are now built, not just where blue links rank.

Check this:

  • Engines covered. Ask which engines they work for in writing. groas, for example, tracks visibility across all 8 engines: ChatGPT, Perplexity, Gemini, Claude, DeepSeek, Grok, Google’s AI Overviews and Google search.
  • What they ship. New pages every day, plus the technical fixes holding you back, and authority built on the sites the engines trust. If the plan is one audit and four blogs a month, it is not built for AI search.
  • How they report. You want a weekly report that shows where you’re named, what moved, and why — not a monthly visibility score with no action log.
  • Target in writing. Pick a number before you pay. On what an agency’s public pitch tells you, we break down why the badge, pricing page and case study matter more than the sales call.

If they cannot show citations gained, pages shipped, and fixes made in the last 7 days, keep looking.

SaaS lives or dies on qualified pipeline, closed-won revenue, ROAS, and cost per acquisition — not clicks, leads, or polished reports alone.

Ask:

  1. Do you optimize toward qualified pipeline and revenue, or toward traffic and MQL volume?
  2. How do paid and organic run — as one program or separately? Paid and organic search throw off more decisions every hour than any team can act on in a month. Running channels separately misses the compounding.
  3. What happens between check-ins? The sales are in the small decisions: a wasted search term cut the day it appears, a bid set for each auction, a budget move worked around the clock.
  4. Who owns strategy? Look for a named human strategist who sets direction, guardrails, and accountability, with specialized models executing continuously.

For SaaS with meaningful paid-search complexity or spend, throughput matters more than slide decks.

How to evaluate a digital marketing agency before you buy

Use the same filter for any digital marketing agency: outcomes, execution, incentives, and exit.

1. Start with the outcome in writing

Do not buy hours or deliverables. Buy a number.

Example of what constraint-first looks like: one sprint, or both together, each with its number in writing before you pay. A Paid Ads Sprint targets +40% more sales and leads from Google and ChatGPT Ads. An SEO and AI Search Sprint targets +40% more visibility in Google and AI answers. Each target is the floor, not the ceiling, judged on a 90-day baseline.

If an agency will not put the target in writing with a remedy — for example, 40% more sales or visibility in 90 days, or we work for free — you are buying effort.

2. Check execution: who does the work and how often?

Compare old paradigm vs new:

  • Signals acted on: every one vs a few each week
  • Reaction speed: instant vs next check-in
  • Hours worked: around the clock vs 40 a week
  • Results tracked: daily vs reported monthly
  • Memory: compounds forever vs resets with turnover

Ask to see an action log from last week. Every bid, keyword and budget move should have an action and the reason behind it. If you get a summary with no log, you are optimizing blind.

3. Check pricing and incentives

Traditional search-marketing models create the wrong incentives:

  • Percentage-of-spend fees that grow when you spend more, even if efficiency drops
  • Hourly billing that rewards slow work
  • Retainers that charge for inefficient human hours and periodic reviews

Look for a flat monthly fee, no setup fees, and month-to-month cancellation. One price paid up front for a defined sprint is easier to evaluate than an open-ended retainer. A live free trial also tells you more than a pitch deck.

Check proof and fit for your constraints

If budget is tight

Do not split a small budget across paid, SEO, content, social and CRO. Pick the constraint:

  • Need sales now from existing demand? Start with paid search only.
  • Need durable visibility in Google and AI answers? Start with SEO and AI search only.
  • Have both budgets and one team to manage it? Run both together with one baseline, one scorecard and one strategist.

If team size is small

If no one can manage dashboards, interpret recommendations, or QA work daily, do not buy a tool that only makes recommendations. Buy execution that runs without you, with a weekly report you can actually read.

If use case is complex

Advertisers with meaningful complexity — many campaigns, products, locations, or search terms — need capacity. Every new campaign, page or client needs more hours from the same people, so results plateau as work piles up. Autonomous execution adds capacity so the same team can take on more, whether that is a business on its own account or an agency across its whole book.

groas drives $1bn+ in attributable revenue per year for 500+ businesses and agencies because it is built for that throughput problem.

A 10-point checklist before you buy

  1. Outcome in writing with baseline and timeframe?
  2. Optimized toward revenue, pipeline, ROAS and CPA — not clicks?
  3. Daily execution, not weekly check-ins?
  4. Paid and organic run as one where it matters?
  5. Full action log with reasons, every week?
  6. Named strategist for direction and accountability?
  7. Flat fee with no percentage-of-spend conflict?
  8. No setup fee and ability to cancel month-to-month?
  9. Live trial or guaranteed sprint — not just a call to see pricing?
  10. Recent proof in your spend band and industry, on camera or in writing?

If an agency fails 2 or more, keep evaluating. The cost is not the fee. It is the 90 days of leaked spend and lost citations while you wait for the next report.