Seller

An external party that provides goods, performs services, or delivers specific outputs to a buying organization.

Key Points

  • Typically a vendor, contractor, or consultant engaged by a buyer organization.
  • Works under a procurement agreement that defines scope, schedule, cost, and quality expectations.
  • Selected through methods such as bids, proposals, or direct negotiation.
  • Accountable for meeting contract requirements and managing risks assigned to the seller.

Example

A company hires a software firm to build a reporting module under a fixed-price contract. The software firm is the seller responsible for delivering the module that meets the agreed specifications and deadline.

PMP Example Question

Which term best describes an external company that delivers contracted project outputs to your organization?

  1. Seller
  2. Buyer
  3. Sponsor
  4. Project team

Correct Answer: A — Seller

Explanation: A seller is an external provider that supplies goods, services, or deliverables to the buying organization under a contract.

Project Management with AI: From Initiation to Closing

Build a practical project management process from initiation to closing with our Project Management: From Initiation to Closing with AI course. Learn how to move from informal project coordination to a structured, repeatable approach using PMBOK-aligned workflows, real examples, and professional templates.

This hands-on course follows a complete project lifecycle. You will learn how to write a project charter, define scope, build a work breakdown structure, develop a schedule, estimate costs, manage risks, engage stakeholders, execute the work, monitor performance, and close the project properly.

You will also learn how to use AI tools to accelerate project management work. The course includes reusable prompts, downloadable templates, assignments, and worked examples that show how project documents connect from one stage to the next.

The course is designed for professionals, team leads, coordinators, analysts, and new project managers who need practical skills they can apply at work. Enroll now and build the confidence to manage projects with structure, clarity, and control.

Explore the Course


Lead with clarity, influence, and outcomes.

HK School of Management offers a practical Leadership for Project Managers course for real projects, tight deadlines, and cross-functional teams. Learn to set direction, align stakeholders, and drive commitment without relying on title. Practical skills, tools, and guidance you can apply right away. Covered by Udemy's 30-day refund policy.

Learn More