Porters Five Forces

Purpose

Assess competitive pressure from entrants, suppliers, buyers, substitutes, and rivalry.

Use when

• market attractiveness matters
• a product or service strategy is being evaluated
• you need a competition-oriented lens

Inputs

• problem context
• available evidence and constraints
• known stakeholders or actors
• desired output format

Procedure

1. Clarify the decision or deliverable.
2. State assumptions before analysis.
3. Apply the technique explicitly rather than implicitly.
4. Capture findings in a structured table or list.
5. Separate facts, inferences, and unknowns.
6. End with implications for next actions.

Outputs

• five-forces assessment
• force-by-force rating
• strongest pressure points
• strategy implications

Guardrails

• Do not present the technique as the answer; use it to inform a decision.
• Flag missing evidence and weak assumptions.
• Keep terminology consistent with the project glossary.
• Where tradeoffs exist, rank them explicitly.

Completion criteria

• technique applied correctly
• assumptions visible
• findings actionable
• next step clear