Product Strategy Mapping tool

Impact Mapping

Connects a goal, actors, behavior changes, and possible deliverables in a traceable impact hypothesis.

Impact Mapping is a collaborative visualization of the assumptions behind an initiative: why the goal matters, who can influence it, how behavior might change and what could support that change.

Core question

Why does the goal matter, who can influence it, how should behavior change and what could support it?

Plan the mapping workshop Method guide

Start comparison

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Participants: 3-8
Time: About 90–120 minutes

Connect every What branch to the Why goal through an actor and behavior impact; deliverables are options to examine.

Paper illustration of a branching impact map with a Why goal at the root, actor circles, How behavior changes and What options.

Why
Set a measurable goal
The goal explains why the work matters and bounds the map.
Who
Identify relevant actors
Actors can create or block desired effects, or be affected by the change.
How
Describe desired behavior changes
Impacts describe how an actor’s behavior would need to change to support the goal.
What
Derive possible deliverables
Deliverables are options the organization could use to support the intended impacts.

Review behavior assumptions and options against results. Update the map when learning changes the goal, actors or impact path.

A good fit when

Use it when an initiative is accumulating feature requests and their connection to business goals or user behavior is unclear.

Ideal for

Strategy to Roadmap
Outcome Planning
Initiative Scoping

Not good for

Pure feature lists
Detailed implementation work

Outputs

Why goal
A justified, measurable outcome as the map root.
Actor-impact paths
Actors and desired or prevented behavior changes.
What options
Possible deliverables with impact assumptions and measurement needs.

Impact map: goal, actors, impacts and options

Fictional teaching example

Fictional map for a measurable outcome. The overarching Why node is stated separately; each row represents a possible actor-impact-deliverable branch.

Impact map: goal, actors, impacts and options
Possible branch	Who · actor	How · impact	What · deliverable
Branch 1Which actor, behavior and possible support belong together?	Households with occasional repair needs.	Choose available tools confidently before traveling. (Fictional impact assumption)	Availability view or firm reservation confirmation. (Option)
Branch 2How could this group support or obstruct the goal?	Volunteers who manage collection and returns.	Update availability and return status promptly. (Fictional impact assumption)	Simple status process or reminder workflow. (Option)
Branch 3Which other group can influence the impact?	Local organizations that provide tools.	Communicate stock and opening hours reliably. (Fictional impact assumption)	Coordinated stock and opening-hours process. (Option)

1. Who · actor
Branch 1
Households with occasional repair needs.
Branch 2
Volunteers who manage collection and returns.
Branch 3
Local organizations that provide tools.
2. How · impact
Branch 1
Choose available tools confidently before traveling. (Fictional impact assumption)
Branch 2
Update availability and return status promptly. (Fictional impact assumption)
Branch 3
Communicate stock and opening hours reliably. (Fictional impact assumption)
3. What · deliverable
Branch 1
Availability view or firm reservation confirmation. (Option)
Branch 2
Simple status process or reminder workflow. (Option)
Branch 3
Coordinated stock and opening-hours process. (Option)

Fictional Why goal: increase completed loans as a share of all reservation requests in the pilot area from 20% to 35% within eight weeks. The baseline, target and timeframe are invented. Rows are impact assumptions and options, not proven causality or delivery commitments.

Source: Gojko Adzic

First step

Bring business and technical perspectives together around a clear goal. Define the system boundary and available outcome signals.

Open the method guide

Good to do first

Product Strategy

OKRs

Supplies the goal whose impact chain gets broken down to actors here.

Where to go next?

Paper illustration of a branching tree with an outcome at its root, customer opportunities, solution options and small experiment cards.

Product Discovery

Opportunity Solution Tree

Continues an actor-impact path as an opportunity in ongoing discovery.

Product Strategy

KPI Tree

Breaks a what-options goal down into a measurable KPI tree.

Deep dive

Purpose

When a goal needs to be connected to several possible paths, it shows chains of impact instead of feature lists. It connects business goal, behavior change, and measures.

How it works

It draws a line from the desired impact through actors and behavior changes to possible solutions. The connection prevents features from being evaluated in isolation and makes every measure checkable against its contribution to the goal.

In detail

Impact Mapping holds up because it brings goal, involved actors, desired behavior change, and possible measures into one causal logic. Good use seriously asks whose behavior needs to change and whether an idea plausibly contributes to that. This quickly demystifies or sharpens solution ideas, because the path from activity to impact doesn't stay foggy.

Facilitation

Start with a clear goal and force the discussion early onto concrete actors and observable behavior. Its quality shows in the moment when a popular idea can no longer demonstrate a plausible impact path. Close with a few credible impact paths and open assumptions still to be checked for the strongest paths.

The method guide walks execution through 4 phases, timing, 4 pitfalls, and clear stop criteria.

Open method guide

Your perspective

Does this method help with your work?

Your feedback helps shape the next improvements to methodatlas.

Sources and topics

Topics

Outcomes Strategy Behavior Planning

Sources

Drawing Impact Maps | Gojko Adzicimpactmapping.orgOriginal description of Why, Who, How and What and the map as a visualization of scope and assumptions.Example Impact Maps | Gojko Adzicimpactmapping.orgExamples show branching by actor and impact and selecting relevant paths.

In playbooks

Derive Product Strategy from VisionMove from a shared product vision through a solid bet to a measurable KPI structure.

Artifact templates

Impact Mapping: WorksheetPlan the shared conversation from the goal through actors and behavior changes to possible options.

markdown

impact-mapping-working-template.md

Plan the shared conversation from the goal through actors and behavior changes to possible options.

Impact Mapping: Worksheet

Question

To be confirmed

Desired outcome

To be confirmed

Scope

Develop an impact map Time: About 90–120 minutes

Complete this worksheet on paper or in your own document during the work.

Preparation for this scope

Method setup

Materials: Wall space or digital mind-map board, cards for goal, actor, impact and deliverable, outcome signals and available evidence.
Roles: Business and technical owners, product team, affected user or domain perspective and one facilitator.
Advance information: Gather the Why goal and current baseline. Review available indicators, influence boundaries and ongoing initiatives.
Overall time needed: About 90–120 minutes for a focused first mapping pass; impact measurement and delivery review happen later.
Setup: Start with Why, then branch through Who, How and What. Keep each What proposal connected to its actor and impact.