Gerald Ajam

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Digital product management glossary

49 terms from R01, Digital product management — 24 defined in the guide itself and 25 more from the field around it. Every term the guide teaches links to the slide that teaches it.

The whole craft glossary

R01 · Why build

Digital product management

What change in behaviour are we betting on?

Every term below is defined in the words of digital product management, guide R01 of craft guides for educational technologists, and opens the guide at the slide where it is taught. 25 of the 49 are the field’s vocabulary rather than the guide’s own: words a reader will meet around this subject, defined here because the guide assumes them. 2 terms are also defined by another guide in the series; where the two differ, both wordings are given. The whole craft glossary holds all of them together.

TermDefinitionReferred to inRead further
B
Bet

A decision to spend effort on the expectation that it will change someone's behaviour in a useful way. It can lose.

  • Seiden, J. (2019). Outcomes over output: Why customer behavior is the key metric for business success. Sense & Respond Press.
  • Kohavi, R., Crook, T., & Longbotham, R. (2009). Online experimentation at Microsoft [Paper presentation]. Third Workshop on Data Mining Case Studies and Practice Prize. exp-platform.com
Beta phase

The stage of a public digital service in which a working version is built and opened to real users, first by invitation and then publicly, while it is still being improved.

  • R01Digital product managementFrom the field · not in the guide
  • Government Digital Service. (2019). Service Standard. GOV.UK. gov.uk
Build trap

Measuring success by outputs rather than outcomes (Perri, 2018).

  • Perri, M. (2018). Escaping the build trap: How effective product management creates real value. O'Reilly Media.
  • Seiden, J. (2019). Outcomes over output: Why customer behavior is the key metric for business success. Sense & Respond Press.
C
Churn rate

The share of users or customers who stop using a product in a given period. Its complement is the retention rate.

  • R01Digital product managementFrom the field · not in the guide
  • Croll, A., & Yoskovitz, B. (2013). Lean analytics: Use data to build a better startup faster. O'Reilly Media.
Commercial off-the-shelf (COTS) software

Ready-made software bought or licensed from a supplier and configured for use, as opposed to software built to order.

  • R01Digital product managementFrom the field · not in the guide
  • Hopson, M., McFadden, V., Refoy, R., & Rouault, A. (Eds.). (2020). De-risking government technology: Federal agency field guide. 18F, U.S. General Services Administration. guides.18f.gov
Cost of delay

What it costs, per unit of time, to have a piece of work not yet done.

R10 What it costs to have a result or a feature later rather than sooner (Reinertsen, 2009).

D
Delivery

The work of building and releasing something reliably.

  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Sy, D. (2007). Adapting usability investigations for agile user-centered design. Journal of Usability Studies, 2(3), 112–132. uxpajournal.org
  • Patton, J. (2017, May 10). Dual track development is not duel track. Jeff Patton & Associates. jpattonassociates.com
Discovery

The work of deciding whether something is worth building, using quick and cheap tests.

  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Torres, T. (2021). Continuous discovery habits: Discover products that create customer value and business value. Product Talk.
  • Sy, D. (2007). Adapting usability investigations for agile user-centered design. Journal of Usability Studies, 2(3), 112–132. uxpajournal.org
Dual-track development

Running discovery and delivery as two parallel tracks, two kinds of work and two kinds of thinking, with ideas tested and settled ahead of the code that implements them (Patton, 2017).

  • Sy, D. (2007). Adapting usability investigations for agile user-centered design. Journal of Usability Studies, 2(3), 112–132. uxpajournal.org
  • Patton, J. (2017, May 10). Dual track development is not duel track. Jeff Patton & Associates. jpattonassociates.com
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
E
Empowered product team

A cross-functional team that is given a problem and an outcome to achieve, and the authority to decide the solution, in place of a list of features to build.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M., Hickman, L., Jones, C., Idiodi, C., & Moore, J. (2024). Transformed: Moving to the product operating model. Wiley.
  • Cagan, M., & Jones, C. (2021). Empowered: Ordinary people, extraordinary products. Wiley.
F
Freemium

A pricing model in which a basic version of a product is free and users or institutions pay for further features, capacity or support.

  • R01Digital product managementFrom the field · not in the guide
  • Anderson, C. (2009). Free: The future of a radical price. Hyperion.
I
Impact

Long-term change in organisations, communities or systems, often years after the work.

  • W. K. Kellogg Foundation. (2004). Logic model development guide. naccho.org
Input metric

A measure a team can move directly through its own work and which is believed to drive the north star metric.

  • R01Digital product managementFrom the field · not in the guide
K
Kano model

A view of satisfaction as two-dimensional: must-be qualities anger users when absent and add little when present, while attractive qualities delight when present and are not missed when absent (Kano et al., 1984).

  • Kano, N., Seraku, N., Takahashi, F., & Tsuji, S. (1984). Attractive quality and must-be quality [in Japanese]. Journal of the Japanese Society for Quality Control, 14(2), 147–156. doi
Key performance indicator (KPI)

A measure an organisation tracks routinely to judge whether an activity is performing as intended, usually against a set target.

  • R01Digital product managementFrom the field · not in the guide
  • Parmenter, D. (2020). Key performance indicators: Developing, implementing, and using winning KPIs (4th ed.). Wiley. doi
L
Leading signal

A behaviour that moves within a planning cycle and plausibly moves before the result you want.

Logic model

A chain that separates outputs, the direct products of activities, from outcomes, the changes in participants' behaviour, and impact, the change in organisations, communities or systems (W. K. Kellogg Foundation, 2004).

  • W. K. Kellogg Foundation. (2004). Logic model development guide. naccho.org
M
Mandate

An instruction from an authority to deliver something, often framed as a solution.

  • Christensen, C. M., Hall, T., Dillon, K., & Duncan, D. S. (2016). Competing against luck: The story of innovation and customer choice. HarperBusiness. archive.org
  • Morozov, E. (2013). To save everything, click here: The folly of technological solutionism. PublicAffairs.
MoSCoW

A method that splits scope into must, should, could and won't, useful for fixed-date releases, with musts kept to no more than about 60% of effort (Clegg & Barker, 1994).

  • Clegg, D., & Barker, R. (1994). Case method fast-track: A RAD approach. Addison-Wesley.
  • Agile Business Consortium. (n.d.). MoSCoW prioritisation. DSDM Project Framework Handbook. agilebusiness.org
N
North star metric

One metric chosen to represent the value a product delivers, supported by input metrics a team can move.

Now, next, later roadmap

A roadmap with three time horizons instead of dates: work under way, work coming soon and work further out, with less detail and less certainty in each later column.

  • R01Digital product managementFrom the field · not in the guide
  • Lombardo, C. T., McCarthy, B., Ryan, E., & Connors, M. (2017). Product roadmaps relaunched: How to set direction while embracing uncertainty. O'Reilly Media.
O
Objectives and key results (OKRs)

A goal-setting format that pairs a qualitative objective with two to five measurable results showing whether it was reached, usually set each quarter.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Doerr, J. (2018). Measure what matters: How Google, Bono, and the Gates Foundation rock the world with OKRs. Portfolio/Penguin.
  • Grove, A. S. (1983). High output management. Random House.
Opportunity

A need, pain point or desire that, if addressed, could move an outcome.

R06 An insight turned into something to design for, usually written as a question.

  • Torres, T. (2021). Continuous discovery habits: Discover products that create customer value and business value. Product Talk.
  • IDEO.org. (2015). The field guide to human-centered design. IDEO.org. designkit.org
  • Rosala, M. (2021). Using "How might we" questions to ideate on the right problems. Nielsen Norman Group. nngroup.com
Opportunity solution tree

A map with the desired outcome at its root, the opportunity space of needs and pain points below it, then the solutions, each carrying small tests of its riskiest assumptions (Torres, 2021).

  • Torres, T. (2021). Continuous discovery habits: Discover products that create customer value and business value. Product Talk.
Outcome

A change in someone's behaviour that leads towards the result you want.

  • Seiden, J. (2019). Outcomes over output: Why customer behavior is the key metric for business success. Sense & Respond Press.
  • W. K. Kellogg Foundation. (2004). Logic model development guide. naccho.org
  • Perri, M. (2018). Escaping the build trap: How effective product management creates real value. O'Reilly Media.
Output

Something a team produces: a feature, a release, a document.

  • W. K. Kellogg Foundation. (2004). Logic model development guide. naccho.org
  • Seiden, J. (2019). Outcomes over output: Why customer behavior is the key metric for business success. Sense & Respond Press.
  • Perri, M. (2018). Escaping the build trap: How effective product management creates real value. O'Reilly Media.
P
Power and interest grid

A grid that sorts stakeholders by how much they can affect a decision and how much they care about it (Mendelow, 1981).

  • Mendelow, A. L. (1981). Environmental scanning: The impact of the stakeholder concept. In Proceedings of the Second International Conference on Information Systems. Association for Information Systems. aisel.aisnet.org
Product

Something maintained and improved over time by a stable team, judged by the outcomes it moves.

  • Kersten, M. (2018). Project to product: How to survive and thrive in the age of digital disruption with the Flow Framework. IT Revolution.
  • Cagan, M., Hickman, L., Jones, C., Idiodi, C., & Moore, J. (2024). Transformed: Moving to the product operating model. Wiley.
  • Thomas, D. (2018, October 29). Funding product teams, not projects. Defra Digital. defradigital.blog.gov.uk
Product life cycle

The stages a product passes through from introduction, through growth and maturity, to decline and retirement, each calling for different investment and different measures.

  • R01Digital product managementFrom the field · not in the guide
  • Levitt, T. (1965). Exploit the product life cycle. Harvard Business Review, 43(6), 81–94.
Product manager

The person answerable for what a product team builds and why, who weighs user value against cost and the organisation's aims. Distinct from a project manager, who is answerable for schedule and budget.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Perri, M. (2018). Escaping the build trap: How effective product management creates real value. O'Reilly Media.
Product operating model

A way of organising technology work around long-lived teams that are given problems to solve and judged by outcomes, in place of projects that are handed features to deliver.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M., Hickman, L., Jones, C., Idiodi, C., & Moore, J. (2024). Transformed: Moving to the product operating model. Wiley.
  • Kersten, M. (2018). Project to product: How to survive and thrive in the age of digital disruption with the Flow Framework. IT Revolution.
Product operations (product ops)

The function that supports product managers with shared data, user-research logistics, tooling and common processes, so that teams spend their time on decisions.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M., Hickman, L., Jones, C., Idiodi, C., & Moore, J. (2024). Transformed: Moving to the product operating model. Wiley.
  • Perri, M., & Tilles, D. (2023). Product operations: How successful companies build better products at scale. Product Thinking.
Product requirements document (PRD)

A document that sets out the problem a feature should solve, who it is for, what it must do and how success will be judged, written before the build begins.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
Product strategy

The sequence of problems a team chooses to solve, and those it chooses not to, in order to move from where the product is now towards its vision.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Perri, M. (2018). Escaping the build trap: How effective product management creates real value. O'Reilly Media.
Product trio

The product, design and engineering leads who run discovery together (Torres, 2021).

  • Torres, T. (2021). Continuous discovery habits: Discover products that create customer value and business value. Product Talk.
Product vision

A short description of the future the product is meant to bring about for its users, usually three to ten years out, which gives the roadmap its direction.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Lombardo, C. T., McCarthy, B., Ryan, E., & Connors, M. (2017). Product roadmaps relaunched: How to set direction while embracing uncertainty. O'Reilly Media.
Product–market fit

The point at which a product meets a real need for a defined group well enough that they keep using it, recommend it and would miss it if it went.

  • R01Digital product managementFrom the field · not in the guide
  • Cagan, M. (2018). Inspired: How to create tech products customers love (2nd ed.). Wiley.
  • Olsen, D. (2015). The lean product playbook: How to innovate with minimum viable products and rapid customer feedback. Wiley. doi
Project

Temporary work to deliver a defined scope by a date and within a budget.

  • Kersten, M. (2018). Project to product: How to survive and thrive in the age of digital disruption with the Flow Framework. IT Revolution.
  • Thomas, D. (2018, October 29). Funding product teams, not projects. Defra Digital. defradigital.blog.gov.uk
  • HM Treasury, Department for Science, Innovation and Technology, & Government Digital Service. (2025, March 12). Performance review of digital spend. GOV.UK. gov.uk
R
Request for proposal (RFP)

A document a buyer issues to invite suppliers to bid for a piece of work, setting out what is needed and how bids will be judged.

  • R01Digital product managementFrom the field · not in the guide
  • Hopson, M., McFadden, V., Refoy, R., & Rouault, A. (Eds.). (2020). De-risking government technology: Federal agency field guide. 18F, U.S. General Services Administration. guides.18f.gov
  • Morrison, J. R., Ross, S. M., & Corcoran, R. P. (2014). Fostering market efficiency in K-12 ed-tech procurement. Johns Hopkins University Center for Research and Reform in Education; Digital Promise. digitalpromise.org
RICE scoring

A prioritisation score of reach, impact and confidence multiplied together and divided by effort, useful for comparing many small items (McBride, 2018).

  • McBride, S. (2018, January 5). RICE prioritization framework for product managers. Intercom. intercom.com
Roadmap

A statement of intent and direction, ideally ordered by certainty rather than by date.

  • Lombardo, C. T., McCarthy, B., Ryan, E., & Connors, M. (2017). Product roadmaps relaunched: How to set direction while embracing uncertainty. O'Reilly Media.
S
Scope creep

The gradual, unplanned growth of what a piece of work is expected to deliver, without matching changes to time, budget or people.

  • R01Digital product managementFrom the field · not in the guide
  • Project Management Institute. (2021). A guide to the project management body of knowledge (PMBOK guide) (7th ed.).
Solutionism

The habit of recasting complex social situations as neat problems with technical fixes (Morozov, 2013).

  • Morozov, E. (2013). To save everything, click here: The folly of technological solutionism. PublicAffairs.
Stage-gate process

A way of running product development as a fixed series of stages, each ending in a review at which managers approve, stop or send back the work.

  • R01Digital product managementFrom the field · not in the guide
  • Cooper, R. G. (1990). Stage-gate systems: A new tool for managing new products. Business Horizons, 33(3), 44–54. doi
Sunk cost fallacy

The tendency to keep investing in something because of what has already been spent on it, although that money or effort cannot be recovered whatever is decided next.

  • R01Digital product managementFrom the field · not in the guide
  • Arkes, H. R., & Blumer, C. (1985). The psychology of sunk cost. Organizational Behavior and Human Decision Processes, 35(1), 124–140. doi
T
Total cost of ownership (TCO)

The full cost of a product over its life, adding training, support, integration, maintenance and eventual replacement to the purchase or licence price.

  • R01Digital product managementFrom the field · not in the guide
  • Ellram, L. M. (1995). Total cost of ownership: An analytical approach for purchasing. International Journal of Physical Distribution & Logistics Management, 25(8), 4–23. doi
V
Value proposition

A statement of the benefit a product offers a particular group of users, and why they should choose it over what they do now.

  • R01Digital product managementFrom the field · not in the guide
  • Osterwalder, A., Pigneur, Y., Bernarda, G., & Smith, A. (2014). Value proposition design: How to create products and services customers want. Wiley.
Vendor lock-in

A position in which moving away from a supplier's product would cost so much, in data migration, retraining or contract penalties, that the buyer stays whatever the price or quality.

  • R01Digital product managementFrom the field · not in the guide
  • Hopson, M., McFadden, V., Refoy, R., & Rouault, A. (Eds.). (2020). De-risking government technology: Federal agency field guide. 18F, U.S. General Services Administration. guides.18f.gov
  • Shapiro, C., & Varian, H. R. (1999). Information rules: A strategic guide to the network economy. Harvard Business School Press. doi
W
Weighted shortest job first (WSJF)

A way of ordering work by dividing each item's cost of delay by its duration, so that short, valuable jobs are done first.

  • R01Digital product managementFrom the field · not in the guide
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