How to answer the vendor decision interview question

The short answer

Interview Coach asks this question in these words:

Tell me about a vendor decision that was yours. What were the options, and what happened?

Pick one vendor choice where you owned the recommendation. Name the options and the criteria you weighed them on: cost, risk, fit, support, exit terms. Say what you chose and who approved the spend. End with how the vendor performed, from a record such as the SLA report or the contract review, including anything that went wrong.

Check your own answer in Claude with Interview Coach, free

What the interviewer is checking

Interviewers ask this to see whether you buy carefully and manage what you bought. The last part, how the vendor did, is where most answers stop too early. The bank lists three things a strong answer does:

• Names the options and the criteria. Three managed service providers, build or buy, renew or switch. And the scoring criteria, ideally agreed before the demos.
• Says what you chose and who approved the spend. Your recommendation and the person who signed the money: a CIO, a CFO, a procurement board.
• Ends with how the vendor performed, with a record. SLA reports, incident counts, the renewal review. A vendor that underperformed and how you handled it is a strong ending.

Avoid naming real vendors negatively. Say "the incumbent" or "the second bidder"; the interviewer cares about your method.

A structure that works

Interview Coach describes a decision answer in four parts:

1. Options. The choices that were on the table. Here: the vendors or paths you compared.
2. Criteria. How you weighed them. Here: the scoring and who set it.
3. Decision. What you chose and who approved it. Here: your recommendation and the approver of the spend.
4. Consequence. What followed, including the cost. Here: performance from a record, and the cost.

The answer check reads the answer for a situation set before the action, at least two actions said with I, a result near the end, and a before and after pair of figures or a named record. It also reads the balance between "we" and "I", the length of a spoken answer, and words that weaken an answer: filler, hedges, weak ownership and vague claims.

Answers as written, and what the check says

Illustrative, not a real client. Each answer below was sent on its own through the answer check of Interview Coach. All of them are also marked short for a spoken answer, because each is one or two sentences; the table shows the other finding, word for word, and one way to fix it.

The check never adds a figure or a record for you. If the vendor failed, say what you did about it.

An illustrative answer

Illustrative, not a real client. Every figure is invented. This answer gets all nine marks of the decision check: length, situation, own action, team versus me, result, evidence, and no vague words, filler or hedges.

When the service desk contract of a hospital group came up for renewal, the incumbent was missing its response times and asking for an increase. I ran a tender with three bidders and agreed the scoring with the CIO before the demos: cost over three years, response times proven at similar clients, transition risk and exit terms. I checked two references for each bidder myself. I recommended the second bidder: not the cheapest, but the only one with a transition plan that kept the old desk running for a month in parallel. The CIO approved the three-year spend. In the first year, tickets resolved within the agreed time rose from 71 percent to 93 percent, per the monthly SLA report, and the parallel month cost 40,000 dollars, which I had put in the business case.

Why it works. The options and criteria are named, the criteria come before the demos, the approver is clear, and the end has a before and after figure from the SLA report plus the cost of the choice.

What the check cannot see

The answer check reads the words of your answer, not the contract behind them. This answer, sent on its own, gets every mark except length:

When renewal was due, I scored the bids and I recommended a switch, and the CIO approved, per the SLA report.

Everything but length is marked. An interviewer would ask: what options, what criteria, and how did the vendor actually perform? The SLA report is named but its content is not.

Choosing your story

• Pick a decision you owned. Your recommendation, your scoring. A choice made above you is a weaker story.
• Show criteria before demos. It proves the decision was not won by the best sales pitch.
• Name the approver of the spend. The question asks for it, and it shows you know your authority.
• End with performance. Signing is the start. The SLA report or the renewal review is the end.

Your resume is where an interviewer looks for these stories, and a line such as "managed vendor relationships" invites this question. Get a free AI review of your resume and see which lines Reed flags first.

Prepare the follow-up questions

• How did you handle the vendor that lost the bid?
• What would make you switch vendors mid-contract?
• How do you measure a vendor beyond the SLA?

Run the free review on your own resume lines.

Keep going

• Interview questions: IT manager interview questions
• Guide: How to answer the failed project question
• Guide: How to answer the influence without authority question
• Guide: How to answer the IT budget question
• Guide: How to answer the major outage question
• Guide: How to answer the stakeholder conflict question
• Guide: How to answer the hardest deadline question
• Guide: How to answer the scope change question
• Guide: How to answer the project risk question

Last updated: October 14, 2026