A whole vendor stack, one career's worth of depth. The way experienced people handle that gap is a stated method, not a bluff.
MSP pre‑sales asks for credible coverage across the five pillars in MSP 03 — which in day‑to‑day practice means identity, endpoint, network, cloud, backup, security and voice. Nobody has genuine depth across all of it, including the people who have been doing it for fifteen years, including the person who will interview you. Newcomers respond in one of two wrong ways: they bluff, which delivery discovers in month two, or they apologise, which reads as not being ready. There is a third answer, and it is the one practitioners actually use.
The operating modelSay it out loud; it is the answer, not an excuse
1. Name one pillar you are genuinely deep in, and one you are actively growing into
Two, honestly, is more credible than six vaguely — and it gives the person opposite something concrete to place you against. Claimed breadth invites a probing question you will fail; claimed depth invites one you will pass.
2. For everything else, know the foundations well enough to ask the right questions
You do not need to configure it. You need to know what it is for, what it costs, what it typically integrates with, and what usually goes wrong — enough to smell when an answer you are being given is wrong.
3. Know who to pull in, and pull them in early
The internal specialist, the delivery lead, the vendor's SE (
MSP 06), the distributor's design desk. Early means before you have committed to a design in front of a customer, not after.
4. Document it heavily
So the understanding you just borrowed becomes the practice's, and so the next person — frequently future you, eighteen months later — does not rebuild it from nothing.
The reason this is a method rather than a workaround is that the failure mode in this job was never "didn't know." It is guessed, and delivery inherited the guess (see MSP 04). A pre‑sales person who says "I don't know that platform well enough to size it — give me until Thursday and I'll have it verified" is doing the job correctly. One who produces a confident number from nothing is not, even on the occasions when the number happens to be right.
Declining to claim expertise you don't have is a competency, not a confession.The distinction that takes people longest to believe
This is also the interview answerAsked which pillar you are strongest in, the shape that lands is: the pillar, then the growth pillar, then the operating model above for everything else. It is usually the same answer the person asking would give about themselves — which is exactly why it lands.