For over forty years, the Stage-Gate® process has served as a framework for managing new product development (NPD). [1] Around the world, organizations rely on Stage-Gate® not only as a structured roadmap for managing innovation but also as a proven system that consistently transforms their best ideas into profitable, winning products. Few business processes have had such a lasting impact on corporate innovation performance—see Figure 1. [2]
In practice, Stage-Gate is a roadmap for moving a new product project from idea to launch—a structured, end-to-end guide for transforming new ideas into successful commercial products—see Figure 2. It provides clarity, discipline, and direction in an area of business that is often ambiguous, risky, and cross-functional. [3] By organizing the innovation journey into clearly defined stages of work and decision-making gates, the system ensures that development is both effective (doing the right project) and efficient (doing the project right).
The Stage-Gate® roadmap embeds decades of empirical research into what makes certain new products succeed while others stumble. [4] These best practices and critical success drivers are deliberately woven into each stage and gate of the model. When properly executed, the process becomes not just a useful guide but a powerful mechanism for greatly improving the probability of market success.
Stage-Gate® – As PDMA Defines It
While some organizations refer to their models as “phase-gate,” “phase-review,” or “gated development,” the Product Development & Management Association (PDMA) formally recognizes Stage-Gate® as the industry standard. The PDMA’s Handbook defines it as: [5]
“Stage-Gate Process: a widely employed product development process that divides the effort into distinct time-sequenced stages separated by management decision gates. Multifunctional teams must successfully I complete a prescribed set of related cross-functional tasks in each stage prior to obtaining management approval to proceed to the next stage of product development. The framework of the Stage-Gate™ process includes workflow and decision-flow paths and defines the supporting systems and practices necessary to ensure the process’s ongoing smooth operation,”
This architecture—stages followed by gates—gave rise to the name Stage-Gate®, which has been used since the late 1980s and is now recognized globally. [6]
The Birth and Adoption of Stage-Gate®
Stage-Gate had its beginnings as an academic research project undertaken by the author early in his career. The study observed how very successful NPD project teams in some leading companies drove “big winner” projects from idea to launch successfully and quickly. The research was much like watching very successful North American football teams as they marched down the field to score a touchdown, and then mapping out what they did—a “playbook”. In this case, the resulting playbook became “Stage-Gate”.
A handful of major companies that had participated in the study decided to give the new process a try. Stage-Gate quickly gained traction because companies immediately saw that the new model addressed weaknesses in their current methods:
- By 2010, a major APQC benchmarking study found that 88% of U.S. firms involved in NPD use a form of Stage-Gate® to manage their projects from idea to launch. [7]
- These companies reported benefits such as improved cross-functional teamwork, higher success rates, stronger early detection of failure, better launch outcomes, and significantly shorter cycle times—often reduced by 30%. [8]
A more recent global study by PDMA found that about 54% of firms worldwide use Stage-Gate® or a similar structured process. [9] This study concluded that “…faster cycle times result from the use of a formal, structured NPD process such as functional phase review, cross-functional stage-gate, or agile,” with Stage-Gate® being the more popular.
Other NPD systems include Waterfall, which originated in the 1940s–1950s for large-scale engineering projects, later for software development. Waterfall is a technical process, not a business process, and lacks gates between the stages; it is a linear, sequential, and fairly rigid project management approach. [10]
Phase Review is similar to Waterfall and was developed in the 1960s by NASA for engineering projects. Unlike Waterfall, however, it does have reviews between phases that gauge project readiness (TRLs), [11] but not go/kill decision points that judge the project’s continued value.
How the Stage-Gate® System Works
The flow of the typical Stage-Gate® system, shown pictorially in Figure 2, is the most current version and is for major new product projects. [2] While the model is laid out in a logical, linear, and sequential fashion, in reality, there is much iteration and circling around, certainly within stages and often between stages, as shown by the circles…. it’s anything but linear! The Stage-Gate® system is very much adaptive and iterative.
A typical full Stage-Gate® system for major new products includes discovery plus five main stages: [3]
- Discovery and Ideation: Upstream activities designed to uncover opportunities and generate ideas. Inputs can come from customers, internal R&D, open innovation partners, suppliers, and strategic initiatives. The aim is to populate the front end with strategically aligned, high-potential ideas.
- Stage 1 – Concept: A quick, preliminary assessment of the idea. Teams conduct initial market and technical scoping, leveraging desk research and fast secondary analysis. The outcome is a clearly articulated concept, with a first view of attractiveness and feasibility.
- Stage 2 – Build the Business Case: A more detailed and evidence-based investigation. This stage typically includes primary market research, VOC, technical feasibility studies, value proposition clarification, financial evaluation, and risk assessment. The key output is a robust business case, specifying the product definition, market positioning, financials, and a plan for the next stage or stages.
- Stage 3 – Development: Detailed design and development of the product and supporting operations or production processes. Activities include engineering design, optimization, simulations, prototyping, some customer testing and demos, and process design. For process industries, this stage often involves molecular discovery or material design and lab development, lab trials, and simulations. The main deliverable is a fully functioning prototype (or equivalent) ready for customer and field testing.
- Stage 4 – Testing and Validation: Rigorous validation of the product, the marketing mix, and the production or service delivery system. This stage typically includes beta tests, user pilots, field trials, extended lab testing, and trial production runs. The goal is to confirm that the product performs as promised, the market will accept it, and operations can deliver reliably at scale.
- Stage 5 – Launch: Full commercialization—ramp-up of manufacturing or operations; execution of the launch, sales, and marketing plans; and roll-out to target markets. Post-launch, the project team continues to monitor performance, resolve issues, and drive product and process improvements until a formal post-launch review is completed; only then does accountability transition into routine business or product management.
The Gates Provide the Governance
Preceding each stage is a gate—an explicit decision point where management must choose whether and how to continue investing. Gates are not mere status reviews and project approval meetings; they are where resource commitments are made! At each gate, senior managers (the gatekeepers) evaluate project progress, assess project value to the business, and decide whether the project merits further funding and people for the next stage. [12]
Each gate comprises three components:
- Gate deliverables: Defined outputs from the previous stage—such as research findings, technical results, financial analyses, and updated project plans—brought by the project team to support the decision. Because deliverables are clearly specified ahead of time, expectations are transparent and teams know what they must produce to move forward.
- Gate criteria against which the project is judged: They include both project readiness and project value. Readiness criteria address whether the project is sufficiently mature for the next stage. Business Value criteria evaluate the attractiveness of the opportunity, often using a risk-adjusted financial model such as Expected Commercial Value,[13] and a research-based scoring model such as the VBS (Value-Based Scorecard).[14] This combination yields a more reliable view of value than traditional financial models alone, whose data are often uncertain or biased.[14,15]
- Gate outputs: A clear decision and an agreed plan. Typical outcomes are Go, Kill, Hold, or Recycle. For Go decisions, the gate also confirms the resourcing for the next stage (budget, headcount, and person-days), timeline, key deliverables, and the date of the next gate. This avoids “approval without resources” and ensures that authorized projects can move quickly.
Gates are usually staffed by senior managers from different functional areas, who control the resources required by the project leader and team for the next stage—a predefined group for each of the five gates. For larger projects requiring more resources, Gates 3, 4, and 5 are often staffed by the leadership team of the business. The entire project team should be at the gate meeting too.
Key Features of Stage-Gate®
- Customer-Centric: The leading cause of new product-failure is a lack of understanding of customers and users—their problems, needs, and purchasing criteria. Stage-Gate addresses this directly by hardwiring customer and user engagement into every stage, from idea generation through launch. [3] Structured Voice of Customer (VOC) work, rapid concept and prototype testing, and customer co-creation activities become “must do” work, not optional extras that can be skipped under time pressure. This customer-centric design consistently reduces failure rates and leads to products with compelling, differentiated value propositions.
- A Governance Model—to ensure that the right R&D investments are made: A pervasive challenge in product innovation is making sound project investment decisions when information is incomplete and risks are high. Stage-Gate embeds a rigorously designed governance mechanism at each gate to support better go/kill and resource-allocation decisions. The result is a more focused portfolio, fewer weak projects, and a higher return on R&D spending. [16]
- A Risk-Mitigating Model: NP stages require significant spending: engineering work, market studies, and prototype fabrication all take time and money. But in Stage-Gate®, as investment levels rise with each stage, information also improves. It’s much like placing progressively larger bets in five-card stud poker. As the amounts being bet increase, so does the quality of information. [3] The result: an incremental investment model, thus risk is managed!
- An Adaptive and Agile System: Modern versions of Stage-Gate® integrate methods originally developed in the software world—frequent build‑and‑test cycles, rapid customer validation, and in‑stage sprints. [17] This creates a process that is both structured and adaptive. As new market or technical information arises, plans and product definitions can pivot while dynamic gates reassess project value. Leading firms use this agile and adaptive Stage-Gate® to respond quickly to uncertainty, reduce time to market, and still maintain the governance and discipline demanded by senior management.
- Cross Functional: A new-product project is very much a cross functional initiative; but often some, departments such as Sales and Operations get left out until too late. The way Stage-Gate® is designed requires the active engagement of the necessary functions, both within the stages and also at the gates. [3] Project teams are composed of people from key functions, and each stage includes parallel tasks owned by different disciplines. Gates likewise are staffed by leaders from multiple functions, ensuring that decisions consider technical feasibility, market potential, operational readiness, and financial impact.
Conclusion
Stage-Gate thus provides an integrated value-creation and governance system that translates high-potential ideas into well-validated, commercially successful products while systematically managing risk at every step. By embedding customer insight, disciplined decision-making, and adaptive, agile practices into a single end-to-end model, it remains the global benchmark for organizations seeking to improve innovation performance and return on R&D investment.
The Author
Dr. Robert Cooper is a Fellow of the Product Development & Management Association and the creator of the globally-employed Stage-Gate process used to drive new products to market. A world expert in the field of management of new product development, he has written 11 books on the topic and more than 170 articles, including many in PDMA publications. Bob is a noted consultant and advisor to Fortune 500 firms, and also gives public and in-house seminars globally. He is Professor Emeritus, McMaster University, Canada ISBM Distinguished Research Fellow at Pennsylvania State University, ands Honorary Advisor at the Snyder Innovation Center at Syracuse University, NY.
Contact: Dr. Robert G. Cooper: robertcooper@cogeco.ca
Or his associate, Michele Jones, MD at Stage-Gate International: michelle.jones@stage-gate.com