Quick answer

A marketplace serves at least two groups, so its first version must solve a complete transaction for both. Identify how buyers find a supplier or product, how sellers join, and what the platform operator must review or approve.

Practical scope

Begin with one transaction path: listing, search or matching, enquiry or checkout, confirmation and dispute handling. Decide whether payments happen on the platform, whether commission is charged, and how refunds and payouts work. Those choices affect operational processes as much as software design.

Avoid building every possible feature before testing demand. An initial version may use manual moderation and a limited category or location. Measure whether buyers receive useful responses and whether sellers can manage the work. Ask developers to distinguish the essential workflow from features that can wait, such as loyalty programmes or elaborate recommendation engines.

What to define before requesting proposals

  • One complete buyer-to-seller transaction
  • Seller onboarding, listings and moderation
  • Payment, commission, refund and payout rules
  • Admin tools for disputes, fraud and support

Questions to ask service providers

  • Which steps can be manual during the MVP?
  • How will marketplace supply and buyer outcomes be measured?
  • What operational work is required outside the software?

How to assess the answers

Fund the smallest version that completes a real transaction safely. Defer recommendation engines and loyalty features until the core market behaviour is proven.

Decide the operator responsibilities

Write down what the platform operator does when a listing is rejected, a supplier does not respond or a buyer disputes a transaction. If money passes through the platform, ask the selected payment provider to confirm the proposed collection and payout arrangement before treating it as a build requirement.

Specify the smallest complete pilot

  • One buyer journey and one supplier journey.
  • An operator queue for approvals and exceptions.
  • A clear transaction status and contact path.
  • A way to record outcomes and learn why transactions stop.

Does an MVP need automated matching?

Not necessarily. Start with rules your team can explain and operate. Add automation when it solves a demonstrated problem and you can check its results.

Marketplace operator responsibility sheet

Copy these items into your brief, adapt the requirements and assign an owner and status. Examples illustrate planning decisions, not customer case studies. Fill cost fields with HKD quotations you obtain and state the billing period.

Decision / itemInformation to provideAcceptance / comparison check
Supplier onboardingRequired information and listing approval ownerUnapproved listings follow a defined review process
Buyer transactionOne complete enquiry/order and its statusesBuyer, supplier and operator see the appropriate record
Exception handlingNo reply, dispute, cancellation or payment issueA named operator can investigate and explain the next step

Download the editable worksheet (CSV)

Related planning guides