methodatlas
Decision Making

Constraint Analysis

Turns options, criteria, and risks into a tangible result by defining the problem or decision boundary, collecting constraints, and deriving design or decision rules.

Core question
Which hard and soft constraints limit the solution space, and which of them are negotiable?
LowWorkshop + async30-90 min
Open runsheetPlan sessionStart comparison
Purpose

The method helps clarify options, criteria, and risks in a concrete way. It separates options, evaluation criteria, and open risks. The result is captured as a constraint list, a hard/soft classification, and option impact notes.

How it works

The team follows the steps: define the problem or decision boundary, collect constraints, classify constraints, test options against constraints, and derive design or decision rules. Each step is captured visibly. At the end, a constraint list, a hard/soft classification, and option impact notes are available so decisions, tests, or actions can follow directly.

Visual orientation

Method sketch for a quick mental model.

Constraint Analysis · Check Solution SpaceMake hard, soft, and assumed constraints visible before solution decisions are made
Constraint AnalysisA decision is filtered through hard, soft, and assumed constraints until a realistic solution space emerges.Translate constraints into realistic optionsSeparate hard boundaries, negotiable conditions, and assumptions before options are evaluated.Framecheckpossiblederive rulesDecisionWhat is the real room tomove?Optionscheck A, B, and C againstconstraintsAblockedBfitsCcheckConstraint filtersort boundaries and clarify negotiabilityhardnot negotiablesoftnegotiableassumptionprove firstSolution spaceonly viable options remainBC?smaller, but more robustDecision boundariesrules for design, planning, andtrade-offs

Flow

  1. 1Define the problem or decision boundary
  2. 2Collect constraints
  3. 3Classify constraints
  4. 4Test options against constraints
  5. 5Derive design or decision rules

The runsheet guides execution with 5 phases, timeboxes, 5 pitfalls, and clear stop criteria.

Open runsheet

Ideal for

  • Planning under constraints
  • Architecture and product decisions
  • Strategic options

Not good for

  • Free ideation without limits
  • Simple root-cause analysis
  • Already fully governed decisions

Deep dive

In detail

Constraint Analysis treats constraints not as a side note, but as a central structure of the problem. The method distinguishes hard constraints, soft constraints, assumptions, and self-imposed limits. That makes it clear which options are impossible, costly, risky, or only possible under certain conditions. Good constraint work can shrink the solution space while still allowing creative workarounds.

Facilitation

Collect constraints from technology, organization, law, time, budget, people, and market. Mark each constraint as hard, soft, assumed, or negotiable. Ask deliberately which constraint could be relaxed and which one truly cannot be negotiated.

Output artifacts
Constraint ListHard/Soft ClassificationOption Impact NotesDecision Boundaries
Tags
constraintsdecisionplanningoptions

Sources

Decision analysis - Wikipediaen.wikipedia.org
Artifact templates
Constraint Analysis Working TemplateCompact working template for Constraint Analysis with context, input, output artifacts, and next step.
markdown

constraint-analysis-working-template.md

Compact working template for Constraint Analysis with context, input, output artifacts, and next step.

Constraint Analysis Working Template

Goal

Identifies hard and soft constraints that limit or prioritize solution options.

Context

When and for what do we use this method?

Input

Which data, observations, decisions, or materials are available?

Execution

Short notes along the runsheet.

Output artifacts

  • Constraint List:
  • Hard/Soft Classification:
  • Option Impact Notes:
  • Decision Boundaries:

Assumptions and open questions

  • ...

Decision / Next step

Owner, date, and success signal.

When to choose differently

Short decision aid for existing alternatives.

Decision Matrix

Statt Constraint Analysis, wenn bekannte Optionen anhand transparenter Kriterien priorisiert werden sollen.

Force Field Analysis

Statt Constraint Analysis, wenn ihr treibende und bremsende Kräfte einer Veränderung gegeneinander aufsetzen wollt.

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