You have a compelling offer, a sharply worded ad, and a clearly defined target audience. You launch the campaign – and then it happens: nothing. Or at least not what you had hoped for. Frustrating, right? The reason for this is often a fundamental error in thinking that is overlooked in most marketing discussions: We treat all purchasing decisions the same.
But there are two fundamentally different types of B2B purchase decisions, and understanding this difference is the key to successful B2B marketing.
In short: A distinction is made between the „extended impulse purchase“, which a single person can make quickly, and the „extensive purchase decision“, which is a lengthy process involving multiple stakeholders. Most B2B marketing strategies fail because they try to treat an extensive purchase decision like an impulse purchase.
This is a decision that a single person can make. The managing director of a small company who buys a new SaaS tool for €50 per month. The founder who books coaching for €1,000. Here, a strong offer, played out via an ad at the right time, can trigger a purchase. The process is short, and the decision-making power lies with one person.
This is the reality for most larger B2B investments: buying a new machine, implementing enterprise software, or hiring a specialized agency. No one makes this decision alone.
An extensive purchase decision is like buying a family car:
– You need the partner's approval (the buying committee).
– One compares models and prices (offer comparison).
– One reads reviews and asks friends (high information need).
– You might even involve the children (the specialist department).
No one buys a family car because they saw a single, compelling ad.
The answer is simple: They try to treat an extensive purchase decision like an impulse purchase. Whoever wants to solve a 500,000 € investment with conversion ads is engaging in performance theater. It is impossible to convince an entire buying committee with a single value proposition.
The data confirms this:
Buying Committee size: For larger B2B investments, according to Gartner, an average of 6-10 people are involved [1].
Independent research: Up to 75% of research is done independently by buyers before they even contact a provider [1].
Trust building: B2B decision makers need on average 5-8 positive interactions to trust a provider.
| Aspect | Impulse purchase (B2C logic) | Extensive purchase decision (B2B reality) |
|---|---|---|
| Decision maker | Individual | 6-10 people (Buying Committee) [1] |
| Purchase cycle | Minutes to days | 3-9 months |
| Information needs | Low | Very high |
| Most important lever | Compelling offer | Trust & brand awareness |
With extensive purchase decisions, other factors suddenly become decisive:
Brand familiarity: Do they already know you before the acute need arises?
Visibility: Are you present over a longer period and perceivable as an expert?
Information provision: Do you offer helpful content for every phase of the research and for every member of the buying committee?
Multiple touchpoints: Do you reach different members of the buying committee on different channels (e.g., trade articles, LinkedIn, webinars)?
At first glance, these factors seem to contribute little to direct “Conversion“. But they are the foundation on which the purchase decision is ultimately made. Those who are not perceived as a relevant provider in the early, self-directed research phase do not exist at the decisive moment. And even if a provider “appears” at the right time through a well-targeted ad, they lack trust.
So before you plan your next marketing budget, ask yourself the most important question: Is your marketing aimed at an impulse purchase or an extensive purchase decision?
If the answer is “extensive,” then invest less in short-term conversion hacks and more in the long-term building of trust and authority. Building this trust architecture is not a campaign project, but a strategic communication task. Because in B2B, it is not the loudest offer that wins, but the most trustworthy brand.
A buying committee is a group of people within a company who are involved in a purchasing decision. According to the Harvard Business Review, this averages 5-6 people, and more for complex deals [2]. These typically include functional users, functional managers, and approving executives, each with different interests and requirements.
By creating content that is tailored to the specific needs of the different roles. Technical decision-makers require technical details, financial officers need ROI calculations, and C-level decision-makers need strategic classifications. Each target group must typically also be reached through different channels.
No, but it has a different role. Instead of triggering direct sales, it can serve to distribute valuable content, generate leads for webinars, or increase brand awareness among the target audience. It is a tool to support the extensive purchase decision, not to force it.
[1] Gartner (2025): “The B2B Buying Journey”. https://www.gartner.com/en/sales/insights/b2b-buying-journey
[2] Harvard Business Review (2015): „Making the Consensus Sale“. https://hbr.org/2015/03/making-the-consensus-sale
Stefan is Co-Founder of EPOS and has been involved in B2B marketing and communications for more than 20 years.
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