Research a market with customer, supplier, and operator interviews

A customer can describe a need while a supplier reveals a constraint that makes the proposed service difficult to deliver. An operator may understand the daily workaround, and a channel partner may explain how the customer encounters alternatives. These accounts answer different questions about the same market.

Plan interviews around the relationships your idea depends on. For each important assumption, identify who could know, who would experience the consequences, and which other source could challenge the answer. This keeps a market study from becoming a collection of loosely related expert opinions.

NSF’s I-Corps program describes discovery as conversations with customers, partners, and other industry stakeholders. That breadth is useful when a proposed business depends on several organizations cooperating. Read NSF’s description of customer discovery.

Map a proposed service across organizations

Consider a fictional founder researching a reusable shipping-crate service for regional distributors. The proposed service depends on a customer using the crates, someone collecting them, a depot preparing them for reuse, and a supplier providing suitable stock. These are illustrative roles, not findings about an existing market.

The customer may like reducing disposable packaging. That preference does not establish that empty crates can be collected at a workable point in the route, that the depot can handle the required volume, or that the customer will accept the operating arrangement.

Draw the loop and mark the handoffs:

Customer use → empty-crate storage → collection → depot processing → return to available stock → next delivery.

Then add the organizations responsible for each stage. If ownership is unclear, leave it blank. An unanswered ownership question may be the most consequential finding in the early research.

Assign evidence to the person positioned to have it

Use a coverage map to connect assumptions with viewpoints. The goal is to identify missing knowledge, not to schedule one interview for every category regardless of relevance.

Assumption to examine	Firsthand viewpoint	Useful counter-view or other evidence
Customers will change the current process	Person responsible for receiving and storing goods	Recent decisions to retain or replace an alternative
Collection fits existing work	Person planning or performing collections	Customer account of when and where empties are available
The depot can prepare crates as required	Operator responsible for the proposed processing stage	Documented requirements and a scoped operational trial
Supply fits the intended use	Supplier with relevant product and delivery experience	Customer constraints and publicly available specifications
The channel can reach the intended buyer	Partner who actually handles comparable opportunities	Buyer account of how alternatives are found and assessed

A supplier’s view of customer demand is a lead, not a replacement for customer evidence. A customer’s guess about depot operations needs the same care. People can be accurate about their own experience and mistaken about another organization’s constraints.

The SBA’s competitive-analysis guidance includes indirect alternatives and the influence of suppliers and customers. Use those relationships to widen the investigation beyond businesses that happen to use the same product label as your idea. Read the SBA’s market research guidance.

Interview around a handoff, not a stakeholder’s entire business

For the crate service, start with a recent delivery or collection that the participant can describe. Ask what arrived, what information accompanied it, what they did next, and what made the handoff complete.

On the customer side: “When the last delivery was unpacked, where did the packaging go, who handled it, and when did it leave?” On the collection side: “What had to be ready before you could collect an item from that location?” On the depot side: “What condition must incoming stock meet before it enters the next stage?”

These questions can expose a mismatch. The customer might assume the driver will collect loose items from several locations, while the route planner assumes a single prepared collection point. Both accounts matter. The potential gap belongs in the service design, not in a vague note that one stakeholder is enthusiastic and another is cautious.

You do not need confidential operating records to ask about the general requirements of a handoff. Where a specification or rule matters, identify the responsible public or authorized source and verify it separately.

Choose the interview sequence by dependency

Begin with the uncertainty that could most change the proposed scope. If customers have no reason to alter their current arrangement, detailed depot optimization is premature. If there is a hard delivery constraint, customer enthusiasm alone cannot resolve it.

In the example, an initial customer conversation may reveal that storage space is the key limit. The next useful interview could be with a collection operator to understand feasible pickup arrangements. A later customer conversation can then examine a concrete arrangement rather than a vague reusable-packaging concept.

This sequence is adaptive. Do not treat every new source as a reason to expand the project indefinitely. Keep a list of assumptions required for the next decision and defer interesting questions that do not affect it yet.

Record dependencies explicitly: “Before testing this offer, establish who prepares the crates for collection.” That makes the research plan useful to the people building the service.

Preserve disagreement across the chain

A combined map should retain the source of each claim. Use tags for firsthand event, general opinion, public document, and untested assumption. Record operating context and period so differences are not mistaken for simple errors.

If two partners both say customers want the service, check whether they are referring to the same customers or the same industry report. Repetition through a network can look like independent confirmation when it is one underlying claim.

Also keep commercial interest visible without treating it as automatic disqualification. A supplier who benefits from your purchase may still provide excellent technical context. Evaluate the support for the claim and obtain a relevant counter-view where the decision warrants it.

End with a readiness map

For every important handoff, mark one of three states: sufficiently understood for the next test, unresolved, or contradicted by current evidence. Add the next observation or conversation needed to change the state.

The crate founder might be ready to test a limited collection arrangement with one kind of customer while leaving depot scale and broader demand unresolved. That is a bounded research outcome. It is stronger than saying the entire market is validated because several stakeholders liked the idea.

The finished artifact should let a teammate trace the proposed service from customer need through delivery and back again, see who supports each assumption, and identify the missing link. That is what complementary market interviews should produce.