Search engine marketing for a business to business buyer looks like consumer paid search and behaves nothing like it. The queries are low volume and expensive, the conversion is a form fill that may be worth thousands or worth nothing, and the feedback loop runs through a sales team rather than a checkout. That combination punishes the ordinary agency playbook, because optimising toward cheap conversions in a market where most conversions are junk makes the account worse every week. This page explains what a competent B2B search partner does differently, how the fee is normally structured, and what to ask before you hand over an account.
The measurement problem that defines the discipline
In consumer search the platform sees the sale. In B2B it does not: the form fill happens on your site, qualification happens in a CRM days later, and the closed deal happens months after that. An agency that optimises to form fills alone will reliably find you more of the cheapest and least qualified traffic available, because that is what the bidding algorithms are being told to want. The fix is unglamorous plumbing. Offline conversion imports from your CRM back into the ad platforms, a qualification stage that is fed back as the conversion event, and value based bidding using an estimated opportunity value rather than a flat one. Ask any candidate to describe how they would wire that up with your CRM in the first sixty days. If the answer is vague, the account will be optimised on the wrong signal for as long as they hold it.
How the fee is normally structured, and what each shape rewards
Three shapes dominate. A percentage of media spend is the oldest and the most misaligned, because the agency earns more by spending more even when the right advice is to spend less. A flat monthly retainer is the most common in B2B and the easiest to compare, but ask what happens to the retainer when spend or account count grows. A hybrid, base retainer plus a smaller percentage above a spend threshold, is a reasonable middle. Performance components tied to pipeline exist and are worth discussing, but they only work when both sides trust the CRM data, so they usually belong in a second contract term rather than the first. Whatever the shape, get the fee, the media and any third party tool costs on separate lines, and ask whether creative production and landing page work are included or billed separately, because in B2B those are where the hidden hours accumulate.
Signals that a candidate has done B2B rather than ecommerce
Ask about competitor bidding policy, because in a small B2B market a brand bidding war can consume a whole budget without adding a customer. Ask how they handle the long tail of high intent, low volume queries where exact match keeps an account clean but starves it of data. Ask what they do about lead form abuse and click fraud from competitors, which is a real cost in expensive niches. Ask how they use LinkedIn or paid social alongside search rather than instead of it, and whether they treat search as demand capture rather than demand creation. Most usefully, ask what they would turn off first in your account. A candidate who has run real B2B accounts has strong opinions about waste, names specific match types, placements and audience expansions they distrust, and will tell you what they would stop before what they would start.
Where search sits next to the rest of the programme
Paid search captures demand that already exists, so it is bounded by how many people search your category this month. In most B2B categories that ceiling arrives fast, and the sensible next move is organic coverage of the same intent, which is why the choice of a B2B SEO agency usually follows the paid decision by a quarter or two rather than competing with it. The two disciplines share the same query research and the same landing page work, so there is real efficiency in having them under one plan even when they are bought from different firms. Insist that whoever runs paid search hands over the query data, the conversion rates by query and the landing page tests, because that is the most valuable research asset the programme produces and it should belong to you rather than to the agency that generated it.
Questions people ask about b2b sem agency
What is the difference between SEM and PPC in a B2B context?
SEM is normally used to mean everything you do to appear in search results through paid placement, including shopping, search partners and remarketing tied to search intent. PPC describes the pricing model. In practice most agencies use the terms interchangeably, so the useful question is not which word they use but which channels the fee actually covers and whether landing pages, creative and measurement plumbing are inside or outside the scope.
Should the agency own our ad accounts?
No. Your company should own the ad accounts, the analytics property, the tag manager container and the conversion configuration, with the agency added as a user. This is the single most consequential contract term in paid search, because an agency that owns the account owns the history, the audiences and the learning, and a transition without them costs months of performance. Put it in writing before the first campaign goes live.
How much media spend justifies hiring an agency?
Below a few thousand dollars a month, the management fee usually eats the advantage and a competent in house operator with a fixed weekly routine will do as well. The break point moves with cost per click, not with revenue: in expensive niches a small budget still involves complex decisions worth paying for. Ask candidates for the smallest account they currently run and what they charge for it.
How long should the first contract term be?
Long enough to include measurement wiring, a testing cycle and one full sales cycle of feedback, which usually means two quarters, but with a break clause at ninety days tied to agreed leading indicators. Twelve month lock ins with no break are common and rarely necessary. What matters more than length is the exit clause: account ownership, data export and a defined handover.