Who runs your advertising is one of the more consequential decisions you will make about the brand, and it is usually decided on cost — which is the wrong axis entirely.

**Here is the honest case on both sides.**

[Watch the walkthrough](https://kb.trackiq.com/kb-assets/kbvideo-inhouse-explainer-af4b8e16.mp4)

*Prefer to watch? One hundred and sixty-four seconds on why speed of execution compounds, how many hours an agency account really gets, and the performance gap that is the real cost.*

## **The case for in-house**

### **Speed of execution**

**This is the largest single advantage, and it compounds.**

**Stock changes.** Running low or back in stock — you adjust spend the same hour instead of waiting.

**Deals and promotions.** Budget adjusted in real time to protect profit through a Lightning or Best Deal.

**Big sales days.** Prime Day and Black Friday reward hourly attention. Raising budgets on the campaigns that are working, while they are working, is how record days actually happen.

**Target TACOS changes** applied the same day.

**New campaign types** tested when you think of them.

**Performance problems** investigated the moment you notice them.

**Each of these is small on its own.** Across a year they are most of the gap between adequate advertising and excellent advertising.

**An agency can do all of it. It just happens more slowly** — and speed here is not a convenience, it is the return.

### **Alignment with the actual business**

**Your team knows the brand, the products, the customers, the competitors, the keywords and what has already been tried.** That context is not transferable in an onboarding call.

**And an agency, structurally, optimises advertising performance. You optimise business profit.** Those are not the same objective. Most agencies now track profit, but their processes are not built to maximise it — see [**Setting Target TACOS per Product**](https://kb.trackiq.com/hc/knowledge-base/articles/setting-target-tacos-per-product).

**In-house also means tailored process.** An agency runs a standardised system across every client, by design. That is how it stays economic — and it is why the last increment of performance is hard to buy.

### **The arithmetic of attention**

**An account manager typically handles 6–12 accounts.**

**Take 8 accounts across a 45-hour week — a conservative assumption. That is 5.6 hours per account, and closer to 5 after breaks.**

**Five hours a week is not enough for full advertising management** on a serious account. It produces something; it does not produce excellence.

**And the limited time forces automation** — standard rules applied across every account. **That is genuinely good at getting you to about 7 out of 10.** It is not how you get past it.

**Then ask who is actually doing the work.** Best case a Western-based manager; often an offshore assistant. **Consider that alongside five hours a week when you judge what you are buying.**

## **The case for an agency**

### **Expertise you do not have yet**

**Advertising rewards depth.** Overbidding, poor targeting, ignoring new ad formats — these are expensive mistakes and easy to make.

**Reaching a genuinely expert level takes real time**, and Amazon keeps changing, so it takes ongoing attention rather than a one-off effort.

### **Time — the strongest argument**

**Managing this in-house consumes a meaningful part of every week**, even with a clean system.

**And it grows.** More products, more campaigns, more time.

**That time comes out of inventory planning, product development, and new marketplaces** — which are not small things to sacrifice.

**If you genuinely do not have the time to learn this and run it, an agency is a real solution to a real problem.**

## **How to decide**

**The honest answer is that it depends on you** — your time, your comfort with numbers, and what else is competing for your attention.

**But be clear about what the cost actually is.**

**Not the fee.** An agency at $2,500–3,000 a month is $30–36k a year, and that is the number everyone fixates on.

**The real cost is the performance gap.** If you spend $50k a month on ads and your ACOS is two points worse than it could be, that is $12k a year on its own — before counting the growth you did not get.

**Which cuts both ways.** An agency that outperforms what you would do yourself is worth well above its fee. One that underperforms costs far more than it charges.

![What the spend is actually returning](/kb-assets/shot-adv-campaigns-view-77ace2.png)

**Knowing which side of that line you are on requires measuring performance rather than assuming it** — see [**Score Your PPC Performance**](https://kb.trackiq.com/hc/knowledge-base/articles/score-your-ppc-performance). That assessment is the same whether the work is done in-house or bought in.

## **The pattern worth knowing**

**Among successful Amazon brands, the large majority run advertising in-house** — and they treat it as a skill they have deliberately built.

**There are real exceptions**, including very large and very well-run brands using agencies successfully. But the pattern is strong enough to be worth weighing.

**And most of the argument for in-house rests on time and expertise being scarce.** Both are addressable: a defined process removes most of the expertise problem, and the right tooling removes most of the time problem — which is what the rest of this training is for. See [**The Brand Manager's Calendar**](https://kb.trackiq.com/hc/knowledge-base/articles/the-brand-managers-calendar).

## **If you take it in-house**

**Give it six to nine months.** Three months in you will be markedly better than on day one; by month seven the difference is substantial.

**Follow a defined process from the start** rather than improvising — see [**The Nine-Report PPC Routine**](https://kb.trackiq.com/hc/knowledge-base/articles/the-nine-report-ppc-routine).

**And measure the handover honestly.** Score performance before you change anything, so you can tell whether the switch worked.

## **Common mistakes**

**Deciding on the fee** rather than on the performance gap.

**Taking it in-house without allocating the time**, and doing it badly.

**Assuming an agency's standard process will beat a well-run in-house one** on a mature account.

**Switching without a baseline**, so you never learn whether it helped.

**Underestimating what in-house costs you** in inventory and product work.

## **Related**

- [**Score Your PPC Performance**](https://kb.trackiq.com/hc/knowledge-base/articles/score-your-ppc-performance) — the baseline this decision needs.
- [**The Brand Manager's Calendar**](https://kb.trackiq.com/hc/knowledge-base/articles/the-brand-managers-calendar) — what in-house actually costs in hours.
- [**What Amazon PPC Is Actually For**](https://kb.trackiq.com/hc/knowledge-base/articles/what-amazon-ppc-is-actually-for) — the objective both options are serving.