DDBA 8531 Week 2 Buying Center Map Example

Seven Participants, Three Vetoes and One Administrator Nobody Planned For: A Buying Center Map of a Health System's Infusion Pump Replacement, With the Evidence Behind Each Placement

Student Name

Walden University

DDBA 8531: Seminar in B2B Marketing

Instructor Name

Month Day, Year

Seven Participants, Three Vetoes and One Administrator Nobody Planned For: A Buying Center Map of a Health System's Infusion Pump Replacement, With the Evidence Behind Each Placement

The Purchase

A composite three-hospital health system in western Pennsylvania, with 940 licensed beds, replaced its large-volume infusion pumps in 2025. The purchase covered about 1,350 pump channels, software licenses and a seven-year service agreement, at a total of about $4.2 million. Two vendors reached the final evaluation. This paper maps the system's buying center: who took part, what role each played, what test each applied, who could stop the purchase and what evidence supports each placement.

The Map

[after]

Evidence came from the value analysis committee's minutes for six meetings, the committee charter, the system's vendor access policy, a published job posting for the informatics lead's position and interviews with the biomedical engineering manager and a nurse educator who sat on the panel.

Table 1

Buying Center for the Infusion Pump Replacement

Where Roles Overlap

Webster and Wind (1972) described roles as functions in the buying process, not as job titles, so one person can hold several. The biomedical engineering manager was both an influencer, since service terms carried weight in the scoring, and a gatekeeper, since his department controlled which vendor representatives could see the existing pump fleet and its repair history. Nurses were users and influencers at once: their trial scorecards counted for 30 percent of the value analysis committee's weighting.

Where Power Differs From Title

Formal authority sat with the value analysis committee and the chief financial officer. But practical vetoes sat elsewhere. The clinical informatics lead's test, whether pumps could exchange data with the medication record, eliminated one vendor's older model early, before the committee scored it. That was a formal veto written into the committee charter, which requires informatics approval for any device that connects to the network. The pharmacy administrator held a practical veto of a different kind: the vendor policy gave pharmacy control over access to the drug library, the list of medications and dose limits programmed into each pump, and one vendor's representatives were refused access for three weeks because they had not completed the required credentialing. Johnston and Bonoma (1981) found that buying centers for important, complex purchases involve more people across more departments and more levels of the organization, and this purchase fits that finding.

The Participant the Seller Met Least

Sellers tend to spend their time with the people whose job is to receive them, usually purchasing staff, while participants elsewhere in the organization go unaddressed. Bonoma and Johnston (1978) argued that industrial buying is a social process among people with different goals and influence, which implies that a seller who meets only one of them sees only part of the decision. The vendor that lost met the supply chain director eleven times and the pharmacy administrator once, according to the system's visitor logs. The winning vendor met pharmacy four times. Nobody planned for the pharmacy administrator to matter, but the drug library is where pump safety is configured, and the administrator controlled the time vendors needed to build it.

Who Talks to Whom

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The biomedical engineering manager was mentioned most often in the minutes, which reflects his position as a link between nursing, informatics and the vendors.

Figure 1

Communication Links Recorded in Committee Minutes

What the Map Means for a Seller

A seller reading this map would plan its calls differently from one reading the organization chart. The chart shows the supply chain director and the chief financial officer at the center; the map shows that nurses' scorecards, the informatics charter and pharmacy's control of drug library access decided which vendor could compete at all. Contact with each veto holder should be planned for the stage at which that person's test is applied, informatics before the committee scores, pharmacy as soon as credentialing opens.

Limits of the Map

The map rests on documents and two interviews. Minutes record what was said in meetings, not conversations outside them, and the interviews may overstate their subjects' importance. Lilien and Wong (1984) found that buying center involvement varies across stages of the purchase, and this map summarizes the whole process rather than stage by stage.

References

Bonoma, T. V., & Johnston, W. J. (1978). The social psychology of industrial buying and selling. Industrial Marketing Management, 7(4), 213-224. https://doi.org/10.1016/0019-8501(78)90038-x

Johnston, W. J., & Bonoma, T. V. (1981). The buying center: Structure and interaction patterns. Journal of Marketing, 45(3), 143-156. https://doi.org/10.1177/002224298104500312

Lilien, G. L., & Wong, M. A. (1984). An exploratory investigation of the structure of the buying center in the metalworking industry. Journal of Marketing Research, 21(1), 1-11. https://doi.org/10.1177/002224378402100101

Webster, F. E., Jr., & Wind, Y. (1972). A general model for understanding organizational buying behavior. Journal of Marketing, 36(2), 12-19. https://doi.org/10.1177/002224297203600204