The phrase covers more ground than most buyers expect. To some agencies, search engine marketing means paid search only. To others it means paid and organic together, sold as one programme. To a third group it is a catch all for anything that produces visibility in a search result, including shopping feeds, local listings and increasingly the answers assembled by AI features. Before comparing two proposals, you have to establish which of those three definitions each one is using, because otherwise you are comparing a management fee against a full programme retainer. This page sets out the distinctions, the fee models, and the checks that separate active management from a monthly report.
What the term actually covers
The narrow definition is paid placement in search results: the campaign structure, the bidding, the ad copy, the landing pages and the conversion tracking. The broad definition adds organic search, which is a completely different discipline with different timescales, different staff and a different failure mode. Paid search buys traffic today and stops the day you stop paying. Organic compounds slowly, holds for a long time, and cannot be switched on for a busy quarter. Programmes that combine them work well when the same team decides which queries are worth buying and which are worth earning, and badly when one department reports on clicks and the other on rankings with no shared measure. Ask each prospective agency to define the scope in writing before you compare prices, and ask which of the two disciplines the account lead actually came from, since almost everyone is stronger in one.
Fee models and what each one rewards
Three shapes dominate. A percentage of media spend is simple and scales with the account, but rewards persuading you to spend more. A flat monthly fee is predictable and rewards spending as few hours as possible, which is why small accounts on flat fees often go quiet after month three. A hybrid with a floor is the most common compromise. Performance based pricing sounds attractive and is difficult to implement honestly, because attribution in a multi touch purchase is contested even with good instrumentation, and any agency willing to be paid purely on last click will optimise toward the channels that claim credit rather than the ones that create demand. Whatever the model, the number that matters is what the fee includes: landing pages, creative production, feed management, conversion tracking and analysis are frequently outside it, and a low headline fee with four exclusions is not the cheaper option.
How to check an account is genuinely being managed
Ask for view access to a live account, anonymised if necessary, and look at the change history rather than the results. Recent negative keyword additions, ad copy versions with dates, and conversion actions that record something meaningful rather than counting every page view are the fingerprints of active work. Then check the measurement. If every form submission counts as a conversion regardless of quality, the account is being optimised toward the wrong thing and the reports will look better every month while the business feels no difference. On the organic side, hold your own verified Search Console access and read impressions and clicks for the queries you agreed to target. That single habit removes most of the information asymmetry in this relationship, and it costs nothing.
What to settle before you sign
Account ownership first: the advertising accounts, the conversion tracking, the analytics property and the domain should be in your name with the agency granted access. This is the term buyers most often skip and most often regret, because the performance history accumulated over a year is genuinely valuable and it does not travel. Second, the notice period, which should be short enough that a bad quarter is not a bad year. Third, the definition of the qualifying outcome, agreed in writing, because every agency optimises toward whatever it is measured on. Fourth, who writes the ad copy and how often it is refreshed. Comparing providers on those four terms produces a far better decision than comparing them on headline fee, and it is the same discipline that any well built list of search marketing companies should be encouraging.
Questions people ask about search engine marketing agencies
Should paid and organic search be bought from the same agency?
There is a real advantage in one team deciding which queries to buy and which to earn, and in sharing the query data between them. The risk is that most agencies are genuinely strong in only one, so ask who leads each discipline and what their background is. A combined proposal from a firm with no organic practitioner is a paid agency with an extra line item.
What is a reasonable management fee?
Most of the market sits at a percentage of media spend with a monthly minimum, and the minimum is the number that matters for smaller advertisers. Rather than negotiating the rate down, negotiate scope up: an agency that includes landing pages and creative inside the fee is often better value at a higher percentage.
How quickly should results appear?
Paid search produces traffic immediately and readable signal within a few weeks, with the first month largely diagnostic. Organic work shows leading indicators in two to three months and meaningful commercial movement over two to three quarters. Proposals that promise organic results on a paid search timescale are describing something else.
Do the AI answers in search change how this should be bought?
They change where an answer is displayed more than what earns it. Specific, well sourced pages that are worth quoting remain the asset, and paid placement continues to be bought the same way. Treat any agency pitching a proprietary method for AI visibility with the same scepticism you would apply to any unverifiable claim.