What Makes a Good Amazon Marketing Agency? 11 Criteria That Actually Predict Outcomes
What separates a good Amazon agency from a bad one? 11 verifiable criteria, with the exact questions to ask on a discovery call.
Last updated: May 2026
TL;DR A good Amazon agency is the one whose work would hold up if you called three of their clients at random. Retention rate, account manager workload, contract exit terms, and reporting transparency predict outcomes far better than agency size, sales-deck polish, or proprietary-tool branding. The eleven criteria below are the ones brands can actually verify on a discovery call.
The Wrong Things to Evaluate On
Most brands hiring an Amazon agency for the first time pick on price, agency size, and how sharp the sales deck looks. Those are the three easiest signals to read. They’re also the three weakest predictors of whether the engagement will work in month nine.
The signals that actually predict outcomes are operational. Who owns the account. How many other accounts that person also owns. What reporting looks like at month three when the honeymoon ends. What happens when something breaks.
Those are harder to read from a website. They’re easy to surface in a discovery call if you know what to ask.
Here are eleven criteria worth checking before signing, each with the question to ask.
1. Partner Retention Rate
Retention is the single hardest agency metric to fake. Every churned client takes the number with them. An agency publishing 90%+ retention is making a claim that would be straightforward to disprove in references, so an agency willing to publish a number is usually telling the truth.
Industry average for Amazon agencies sits below 80%. Many agencies don’t publish a number at all, which is its own answer. For example, Canopy Management publishes 99.1% partner retention.
A rule that holds up: if an agency won’t share a retention rate, ask why. The honest answer is usually that the number isn’t flattering.
Discovery call question: What’s your partner retention rate over the last 24 months, and can you connect me with two clients who have been with you for at least 18 months?
2. Who Owns the Account, and How Many Other Accounts Do They Own
Two questions, asked together, because the answer to the first is meaningless without the second.
Every agency makes a structural choice: one person owns your account, or a rotating cast does. The dedicated brand manager model assigns one person who sits on weekly calls, owns strategy, pulls in specialists when needed, and is accountable when things go wrong. The team-based model gives you a pod of specialists coordinated through a project manager or dashboard.
Both can work. Only one survives the inevitable agency turnover without forcing the brand to re-onboard a new lead every six months.
The second question is the one almost no brand asks. How many accounts does the person running your business actually manage? The math is unforgiving. An account manager running 20+ brands is running a templated service, regardless of what the sales deck says. Real strategic work, weekly campaign analysis, creative refresh cycles, category-level competitive monitoring — none of that happens at that volume. What happens instead is template application and reactive firefighting.
A good agency caps account manager load at a number that allows actual strategic ownership. Anything above 10-12 accounts per manager is a red flag for full-service work.
This is the question agencies are most uncomfortable answering, which is why it’s worth asking.
Discovery call question: Who specifically will be my day-to-day point of contact for the next 24 months, how many active accounts does that person currently handle, and what’s the agency-wide cap?
3. Reporting Transparency
Reporting is where good agencies and bad agencies separate by month three. The bad ones send vanity dashboards: impressions, clicks, ROAS, all in isolation. The good ones connect ad spend to revenue, profit, and the strategic decisions that drove the numbers.
A real report explains what changed in the account that week and why. It includes what didn’t work. It surfaces uncomfortable trends like rising TACoS or declining organic rank instead of burying them. It reconciles to the raw data in Seller Central so the brand can verify the math.
Agencies that route reporting through a black-box dashboard with no underlying data trail are usually hiding the parts that wouldn’t survive scrutiny. Ask to see a real recent monthly report from a current client, with the brand name redacted. The agencies that can produce one in 24 hours are the agencies whose reporting is honest enough to share.
Discovery call question: Can I see a real, recent monthly report from a current client, with the brand name redacted?
4. Amazon-Specific Expertise
Amazon is not Google. Amazon is not Meta. An agency that came up on Google Ads or paid social and bolted Amazon onto its services page is running on different muscle than an agency that built itself on Amazon from day one.
Amazon-specific expertise shows up in the small things. Whether the team has a working point of view on Alexa for Shopping (the AI assistant that replaced Rufus in May 2026). Whether they understand TACoS as the primary metric and not ACoS. Whether they know when Sponsored Brands video outperforms Sponsored Display and when it doesn’t. Whether they think about brand defense at all.
Generalist agencies tend to optimize Amazon campaigns the way they optimize Google campaigns: high-funnel awareness logic, broad-match keyword expansion, brand-safe positioning. That logic costs brands money on a platform where the customer is already at the bottom of the funnel by default.
Discovery call question: What percentage of your team’s professional experience is specifically on Amazon, and how many of your senior people have Amazon corporate or seller-side experience?
5. Multi-Channel Capability (Or an Honest Lack of It)
A growing brand rarely stays Amazon-only forever. Walmart, TikTok Shop, Shopify, Meta, and Google all show up in the channel mix within 18 months for most successful Amazon brands.
A good agency is honest about which channels it runs at depth versus which it offers as line items. An agency running six platforms with dedicated specialists on each is genuinely multi-channel. An agency that lists Walmart, TikTok Shop, and Shopify on its services page but staffs all three with the same two people who run Amazon for everyone is offering theater.
The honest answer matters more than the marketed one. If a brand’s strategy is Amazon-deep, hiring an Amazon-only specialist is the right call. If a brand’s strategy is omnichannel, hiring an agency that genuinely operates across channels with shared strategy and unified reporting saves the coordination tax of running three separate vendors who each blame the other when numbers slip.
Discovery call question: Across the channels listed on your services page, how many full-time team members specifically own each one?
6. Brand Stage Fit
Agencies that work with $50K monthly brands rarely work well with $5M monthly brands, and vice versa. The operational model, deliverables cadence, strategic complexity, and pricing all calibrate to a specific revenue range.
A good agency is direct about which brand stage it serves best. Agencies serving early-stage brands ($20K-$500K monthly) compete on accessibility, founder-friendly communication, and growth velocity. Agencies serving mid-market ($500K-$5M monthly) compete on category expertise, retail media sophistication, and creative production. Agencies serving enterprise ($5M+ monthly) compete on Vendor Central depth, AMC capability, and global marketplace coordination.
An agency that claims to be equally good at all three is usually not great at any of them.
Discovery call question: What’s the revenue range of your typical client, and which clients in my specific revenue range can you point to as case studies?
7. Strategic Depth Beyond PPC
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Start the ConversationPPC is the most visible part of Amazon marketing. It’s rarely where the biggest growth comes from.
Organic rank, creative quality, listing optimization, brand store traffic, A+ content, video, off-Amazon traffic, and AMC-driven audience strategy all compound in ways pure PPC management doesn’t. A good agency treats PPC as one lever among many. The lever it pulls hardest is whatever’s most broken for a given brand. Sometimes that’s bid strategy. More often it’s a main image with 41% conversion when 53% is achievable, or thin titles missing primary keywords, or a brand store that’s been ignored since 2023.
Agencies that lead with PPC pricing and PPC reporting are signaling that PPC is what they sell. The best ones lead with a comprehensive audit and a prioritized list of what would move the business most, which is rarely just bid optimization.
Discovery call question: Walk me through the last three accounts where your biggest impact came from something other than PPC optimization. What did you do, and what changed?
8. Contract and Exit Terms
The contract tells the truth about how the agency thinks about the relationship. Long-term lockups, auto-renewals, and aggressive cancellation penalties are not partnership terms. They’re insurance against churn that the agency wouldn’t need if its work spoke for itself.
A good agency uses contract terms that align with confidence in its own service. Month-to-month after an initial commitment. Clear cancellation notice (30-60 days). No penalty for ending an engagement that isn’t working. Clean handoff terms for the assets, accounts, and creative the brand owns.
Predatory contract terms correlate strongly with poor retention. An agency that has to lock clients in for 12 months at a time usually has retention problems it doesn’t want to admit.
Discovery call question: What does your standard contract look like for cancellation, notice period, and handoff of accounts and creative if the relationship ends?
9. Proof of Real Client Outcomes
Every agency homepage has case studies. The ones that mean something share specific numbers, specific timeframes, and named brands willing to talk on a reference call. The ones that don’t share unverifiable anonymized stats with no path to verification.
A good agency has named clients willing to talk to prospects. It publishes revenue growth, profit growth, organic rank improvements, and the specific tactics that drove the numbers. It also has the honesty to describe what didn’t work and what it learned from accounts that churned.
The case studies on the website are the marketing version. The real version is on a reference call with three current clients chosen by the prospect, not the agency. That second list is the one that matters.
Discovery call question: Can I pick three clients from your portfolio at random to talk to, rather than the three you’d recommend?
10. Proprietary Technology That Actually Does Something
Every Amazon agency now claims proprietary AI or proprietary tools. Most of those claims are wrappers around Helium 10, Jungle Scout, or Pacvue with the agency’s logo on top.
Real proprietary technology shows up as something the agency can demonstrate doing work that off-the-shelf tools can’t. That’s hard to fake live. Asking for a real-time demonstration against an actual account, with the agency walking through what it sees and what it would do differently than a generic tool, separates the agencies that have built something from the agencies that have rebranded something.
Canopy Management’s C.A.T. (Canopy Ad Technology) is one example, built for cross-channel campaign management and reporting across Amazon, Walmart, TikTok Shop, Shopify, Meta, and Google. SalesDuo’s BI dashboard is another, built for ASIN-level financial visibility. The substance matters more than the branding.
Discovery call question: Can you walk me through a live demo of your proprietary tool against a real account, including what it does that off-the-shelf software like Helium 10 or Pacvue doesn’t?
11. Adaptability to Amazon’s Platform Changes
Amazon changes constantly. Cosmo reshaped relevance in 2024. AI-generated creative tools changed campaign architecture in 2025. In May 2026, Amazon retired Rufus and launched Alexa for Shopping, the conversational AI that now sits in the main search bar, generates AI overviews above results, and runs side-by-side product comparisons inside the results page itself.
That rollout reshapes how listings get discovered, how sponsored placements perform, and what brands need to do with attribute data, bullet structure, and A+ content to stay extractable in AI-mediated discovery. Agencies still running 2022 playbooks in 2026 will visibly underperform agencies that aren’t.
A good agency adapts faster than its clients can on their own. That shows up in how quickly the team briefs clients on platform changes, how fast they integrate new tools, and whether they have a defined process for translating Amazon announcements into client strategy adjustments inside a week, not a quarter.
Discovery call question: Walk me through how your strategy has changed since Alexa for Shopping launched. What did you brief clients on, what listing or campaign adjustments are you making, and how are you tracking the impact on new-to-brand purchase rate and PPC efficiency during the rollout?
Frequently Asked Questions
Partner retention rate, paired with the ability to verify it through references. Retention is the hardest metric to fake, and an agency that retains clients across multiple years is the one whose work demonstrably holds up. Most other criteria correlate with retention, so it’s the closest available proxy for overall agency quality.
Ask for three references from clients you select at random from their public client list, not three the agency recommends. Talk to those references about response time, reporting quality, and what happened when something went wrong. Marketing budgets fund good websites. Operational reality shows up on reference calls.
Full-service Amazon agency retainers typically run $3,500-$12,000 monthly for brands at $500K-$5M annual revenue, with enterprise engagements running higher. Pricing model matters more than the number. Percentage of ad spend creates incentive misalignment (the agency makes more by spending more, not by spending well). Flat retainers or hybrid models with performance components align more cleanly.
Not automatically. Larger agencies have more specialists and more bench depth. Smaller agencies often offer more senior attention per account. The right answer depends on brand stage. Earlier-stage brands often get better outcomes from smaller agencies where they’re a meaningful account. Enterprise brands often need the depth only larger agencies can staff.
Ninety days is the minimum for fair evaluation. Real changes in organic rank, advertising efficiency, and creative performance take 60-90 days to compound. Anything shorter measures noise. Six months is the right window for evaluating whether strategic direction is working. Twelve months is the right window for evaluating whether the agency is materially growing the business.
Three answers correlate strongly with bad outcomes: an agency that won’t share its retention rate, an agency that won’t put performance commitments in writing, and an agency that won’t let you meet the team that would actually run your account before you sign. Each of those refusals signals something the agency doesn’t want scrutinized.
Some can. Most can’t. An agency that staffs each channel with dedicated specialists and runs unified strategy across them is genuinely omnichannel. An agency that lists multiple channels on its services page but operates them all out of the same Amazon team is offering channel theater. Ask how many full-time people are dedicated to each non-Amazon channel.
An agency executes the work end to end: PPC management, creative production, listing optimization, reporting, and strategy. A consultant advises on strategy and leaves execution to internal teams or other vendors. Brands with capable internal teams often get better leverage from a consultant. Brands without internal Amazon execution capacity need a full-service agency.
About Canopy Management
Canopy Management is a full-service omnichannel agency based in Austin, Texas. We run Amazon, Walmart, TikTok Shop, Shopify, Meta, and Google for brands doing $20K to $1.5M in monthly revenue, with the same dedicated brand manager owning the account for the life of the engagement.
The numbers we lead with: $3.3 billion in partner revenue, 84% average year-over-year profit increase, and 99.1% partner retention.
Schedule a strategy session to see how we’d approach your account.
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