Media buying means choosing where your ads appear, when, to whom and on what budget, then continually moving money toward what works and stopping what wastes it. Remember that whoever runs it is responsible for repeated financial decisions. Launching the campaign is only the first of them.
This article explains the cycle an ad manager works in, how to calculate a loss limit, and the questions that reveal the quality of whoever runs your budget.
Media buying versus digital marketing
Digital marketing is broader: message, content, pages, measurement, and free and paid channels. Media buying is the part that spends the ad budget. A well-run campaign can still fail if the page is weak or replies are slow, which is why it comes after the foundations covered in where to start with digital marketing.
How does the cycle work?
- Goal and limit: what result do you want, and what's the most you'll pay for it?
- Budget split: part for what has proven itself, a smaller part for testing.
- Launch: a clear audience, several ads, and the right destination for each.
- Monitoring: regular checks on spend, cost and tracking.
- Reallocation: stop what's weak and gradually raise what meets the goal.
- Reporting: what we spent, what came back and what changes.
Calculate your loss limit before launch
A loss limit is the most you let a campaign spend without a result before stopping it. Work it out from your profit first. Here's a hypothetical example in generic currency units, so swap in your own figures:
| Item | Hypothetical figure |
|---|---|
| Profit per sale before ads | 1000 |
| The most you'd pay per sale | 400 |
| Requests that become sales, from your records | 1 in 5 |
| The most you'd pay per request | 400 ÷ 5 = 80 |
| Loss limit per ad set | 80 × 3 = 240 with no request |
The multiplier of 3 is a starting rule we use to avoid both stopping too early and running too long, and you can adjust it for your business. What matters is writing the number down before launch, because a decision made after losing money gets colored by hope.
Why not edit a campaign every hour?
Ad platforms need data to work. Google says the learning status in Smart Bidding never lasts more than 7 days and shows up after structural changes, such as a new strategy or changed conversion goals, and that budget changes don't trigger it, per the Google Ads Help Center. Performance can still take time to settle afterwards.
Meta has a learning phase too, with different rules, explained in its Business Help Center. Check each platform's official documentation before relying on figures repeated elsewhere, since these rules change.
The working rule: check daily to catch faults, such as broken tracking or an expired offer, and make performance decisions once enough data has built up.
What does an ad manager do each day and week?
- Daily: confirm spend looks normal, links and tracking work, and ad comments are under control.
- Weekly: compare cost with the limit, stop what's weak, and test a new message or image.
- Monthly: match requests against actual sales, and review the budget split across platforms.
How do you split budget between what works and testing?
If this is your first budget, start with how to split your first ad budget. A practical starting rule: put about 70% into what has proven itself and 30% into testing new audiences or messages. This split is a working estimate, not a published standard. In your first month nothing is proven, so all of it is a test. Keep it simple then: one or two audiences and three truly different messages, so each gets enough spend to read.
Don't split evenly across campaigns. A campaign meeting the goal deserves a larger share, and one over the limit stops or changes. When you raise spend, do it gradually and watch cost per request after each increase, because a wider audience can push cost up.
Buying directly from publishers
Beyond self-serve platforms like Meta and Google, you can deal directly with a site, app or newsletter your audience follows. This helps when the publisher is trusted in your field and lets you fix the placement and duration. Before paying, ask for reach data and agree on a dedicated tracking link that shows actual visits and requests.
When don't you need an ad manager?
If your budget is very small and your campaign simple, you may be able to run it yourself with sound measurement. If your page doesn't convert or nobody answers requests, fix that first. An ad manager brings people to your page and can't make up for a weak offer or poor follow-up. Either way, keep ownership of the ad account from day one.
Eight questions for anyone running your budget
- Are the ad account and pixel in my company's name?
- Will I see actual spend inside the platform, or only in a separate report?
- How do you calculate cost per request, and where do the sales figures come from?
- What's the loss limit, and who decides to stop?
- How many ads will you test in the first month?
- What happens if the result isn't reached in the agreed time?
- Are your fees a percentage of spend? If so, how do you avoid being pushed to raise it?
- Do you guarantee a specific result? Be wary of absolute promises, because results also depend on the offer, the page and follow-up.
Signs you should take a closer look
- A report about clicks and impressions that never mentions requests.
- You have no access to your own account.
- The budget goes up before request quality has been confirmed.
- The platform's request count differs widely from what reaches sales, with no explanation.
Next step
Work out the loss limit for your business using the table above, and put the eight questions to whoever runs your ads. If you want a team to allocate and monitor your budget and give you a clear spend statement, take a look at our media buying service.