What Is Vendor Management? Working with Agencies Without Leaving It All to Them
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Category: Marketing Glossary
Published:
Last Updated:
Category: Marketing Glossary

Authors: Shusaku Yosa
The agency is handling it, so we are fine. Have you ever been given that report when a project started slipping, and simply waited to see what happened? External partners are experts in execution, but the only party that can judge against your business objectives is you. Vendor management is not about policing your suppliers. It is about actively creating the conditions in which good outcomes are possible. This article covers the underlying idea and the practical steps before, during, and after an engagement.
Vendor management is the practice of designing and running the whole relationship with an external supplier: selecting them, contracting, keeping the work moving, and evaluating the outcome. It applies to production agencies, advertising agencies, software development firms, consultancies, and any other relationship where work is performed outside your organization.
The word management here does not mean surveillance or pressure. The goal is to create conditions in which the supplier can bring the capability they actually have, and to get outcomes worth what you spent.
If you treat the purchase order as the end of your job, the next time you appear is when the deliverable arrives. If the direction has drifted by then, the cost of correction is at its maximum. It helps to think of vendor management as the mechanism for detecting and correcting drift while it is still small.
Business priorities, internal politics, initiatives that were tried and failed, and unfiltered customer feedback are all things only the buyer knows. Asked to make judgment calls without them, a vendor has little choice but to default to the safe option. Most of the time, a mediocre deliverable is a symptom of missing information rather than missing ability.
A check that would have taken an hour at the design stage becomes days of rework after implementation and weeks after launch. The cost of redoing work rises as the project progresses, so early involvement has disproportionate value.
When everything is left to the vendor, the reasoning behind design decisions and the record of what was tried and did not work never accumulate internally. When you switch suppliers or your own staff move on, you start explaining from scratch again.
Hold the boundary between what is in and what is out. Accepting every mid-project request unconditionally breaks the schedule and the quality, while refusing everything degrades the result. The day-to-day work is deciding, case by case, between do it now, defer to the next phase, and decline, then recording the decision.
Write down the pass criteria for deliverables before you engage. Phrase them so that anyone would reach the same verdict, for example under three seconds to render on key pages, or copy must be fact-checked against primary sources. A review without criteria degenerates into an exchange of personal opinion.
Track budget burn alongside progress. If 60 percent of the budget is spent when the work is 30 percent complete, that is the moment to act. Noticing just before delivery leaves almost no options open.
Design who the point of contact is, how often you meet, what gets reported, and who approves. When this is unclear, you get dropped messages and conflicting instructions at the same time. Whether bad news travels upward quickly is one of the strongest indicators of how safe a project actually is.
Agree on what counts as success before work begins. Without it, every decision along the way turns into a debate about preference. If you are producing an RFP, documenting the objective at this point means it carries straight into the selection process.
Decide, task by task, who executes, who approves, who is consulted, and who is informed. Naming a single approver is especially effective, and on its own it visibly reduces the number of revision cycles.
Define the acceptance criteria for deliverables separately from the outcome measures for the project as a whole. The first drives sign-off, the second drives whether you engage the same vendor again. Conflating them leaves you unable to explain cases where quality met the bar but results did not follow.
Set the meeting cadence, who takes minutes, the escalation path for urgent issues, and which tools you will use. Decisions that scroll away in a chat channel and never make it into a record is a failure that happens at every scale. Separate where you decide from where you keep the record.
Whether the agreement promises a completed deliverable or promises the performance of services changes both the allocation of responsibility and how acceptance works. Some teams split the two, using a deliverable-based contract for well-defined phases and a services-based one for exploratory phases. Contract terms are highly situation-specific, so have your legal team or a qualified professional review anything you actually sign.
The third is the most important. Every day a vendor spends waiting on a decision from you translates directly into schedule slippage. Simply reading out the list of what we need to decide by next time at the end of each meeting stabilizes the pace of a project.
When reviewing a deliverable, return a verdict rather than an impression. Instead of this looks good, say this meets the criteria and this point needs revision, and the vendor can keep working. Put revision requests in writing along with the reasoning. Including the reasoning reduces the same issue recurring in the next deliverable.
Evaluation becomes the basis for your next engagement decision and for negotiating terms. Organizing it around the following dimensions keeps it out of the realm of personal impression.
Run reviews not only at project close but quarterly or half-yearly on long-running relationships. Share the results with the vendor and be specific about what you want improved. Ending a contract without ever saying so leaves neither side with anything learned.
Someone who can explain the business objective and move internal decisions along. It does not have to be a dedicated role, but the point of contact and the approver should be explicit. Concentrating everything in one person creates key-person risk, so at minimum make minutes and decision records a standing process.
Define the boundaries between roles and any overlap in responsibility up front. The work that falls between two suppliers is the easiest thing to miss, so name an owner for it in the project plan. Whether to hold a joint status meeting or coordinate individually with the buyer as the hub depends on scale and on the relationships involved.
Start by laying out what happened and when, separating the facts from the frustration. Then return to the original agreement and the contract, and establish together where things diverged. If it cannot be resolved at working level, arrange a conversation between the accountable executives on each side. Once termination or liability is on the table, consult your legal team or a qualified professional.
Vendor management is not about policing an external supplier. It is about actively creating the conditions in which results are possible. Settle five things before you engage, namely objectives and definition of success, division of responsibility, evaluation measures, communication design, and contract structure, and managing the work in flight becomes far lighter.
Leaving everything to the vendor and micromanaging every step both move you away from results. Decide what needs deciding, and delegate what should be delegated. Designing that line is what vendor management actually consists of. Start by checking whether the project you are running right now has a single named approver.

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