Case study: Porter analysis of the Cloud IaaS market
Objective: Apply Porter's model to a real market (Cloud Infrastructure) to understand the concrete approach and its strategic implications.
Let's apply Porter's 5 Forces to the Cloud Infrastructure-as-a-Service (IaaS) market, dominated by AWS, Microsoft Azure and Google Cloud Platform (GCP).
Scoring the Cloud IaaS market
| Force | Score | Rationale |
|---|---|---|
| Rivalry between suppliers | 3/5 | 3 major players (AWS ~30%, Azure ~25%, GCP ~13% - Synergy, Q1 2026) actively competing on prices and features. But an oligopoly with high barriers. |
| Supplier power | 2/5 | Very strong: proprietary technologies, closed ecosystems, high migration costs (6-18 months), lock-in effect via managed services. |
| Buyer power | 2/5 | Weak for most: growing technical dependency, scarce skills, multi-year commitments. Very large accounts (> EUR 10M/year) have more leverage. |
| Threat of substitutes | 2/5 | Weak: on-premise private cloud is receding, alternatives (OVHcloud, Scaleway) are limited in features and geographic coverage. |
| Threat of new entrants | 1/5 | Very weak: colossal investment required (global datacenters), scale effects, considerable technological and commercial barriers. |
Total score: 10/25 - Weak buyer position
Strategic implications
With a 10/25 score, the Cloud buyer must adopt a suitable strategy:
- Collaborative approach: Negotiate partnerships with volume commitments in exchange for discounts (Enterprise Discount Programs, Reserved Instances)
- Controlled multi-cloud: Use 2 providers to keep a minimum of competition, without diluting volumes to the point of losing discounts
- FinOps: Optimise internal consumption (right-sizing, auto-scaling, removing unused resources) to cut the bill by 20-30% without negotiating
- Term contracts: Negotiate 1-3 year commitments with 20-40% discounts versus on-demand pricing
- Anticipation: Avoid excessive lock-in by favouring portable technologies (containers, Kubernetes, standard APIs)
3 classic mistakes in Porter analysis
- Confusing market and supplier: Porter analyses a market (Cloud IaaS), not a specific supplier. Analysing a supplier belongs to supplier segmentation.
- Forgetting the time dynamic: Forces evolve. The 2020 Cloud market scoring has nothing in common with today's. The rise of generative AI is changing the balance of power.
- Not quantifying: Saying that supplier power is strong is not enough. You must score it (2/5) and justify it with factual data to make the analysis actionable.
💡 Key takeaway: The Porter analysis of Cloud IaaS reveals a market in a position of strength over buyers (score 10/25). This diagnosis justifies a collaborative rather than aggressive strategy, with levers such as FinOps, controlled multi-cloud and term commitments. The Category Manager who attempts an e-auction on Cloud IaaS is making a strategic mistake.