Blog

Notes & cheat sheets

Course notes and revision sheets, written to pass on what I learn, simply.

Porter's Five Forces: the grid that shows where the margin goes
June 20, 2026

Porter's Five Forces: the grid that shows where the margin goes

A market can grow fast and leave margin for no one. Porter's model exists to show where an industry's profitability is decided, and who captures it.

StratégiePorterAnalyse de marchéBusiness
Startup without the myth: lessons from a founder acquired by Apple
June 18, 2026

Startup without the myth: lessons from a founder acquired by Apple

Notes from a no-filter talk by Giuliano Iacobelli, a founder whose startup ended up acquired by Apple: the myth versus reality, build less, always be selling, and raising funds as a full-time job.

StartupEntrepreneuriatProductLevée de fonds
The PRD: the document that decides whether your hardware project drifts
June 17, 2026

The PRD: the document that decides whether your hardware project drifts

The PRD is the contract between the need and engineering. A requirement you can't test is a requirement you'll argue over during validation. How to write one that holds.

PRDHardwareNPISpécifications
Manufacturing in China or Europe: the trade-off we always miss
June 12, 2026

Manufacturing in China or Europe: the trade-off we always miss

A 20% cheaper subcontractor in Shenzhen can end up costing you more overall. The China/Europe trade-off is not about comparing prices in a spreadsheet, but about control, intellectual property, and volume.

SourcingEMSChinePropriété intellectuelle
The big rules of project management, seen by a PM
June 12, 2026

The big rules of project management, seen by a PM

A project rarely goes off track all at once, it slips: a vague deliverable, an untreated risk, a skipped review. The rules that make a project predictable.

Gestion de projetPlanningMéthode
Reshoring electronics production: the real math
June 12, 2026

Reshoring electronics production: the real math

The Made in France versus Asia debate is not decided by hourly cost, but by the ability to qualify an industrial base and to automate. What relocalization really requires.

RelocalisationEMSIndustrialisationMade in France
Repairability and CE marking: it's decided at design, not at the end of the project
June 12, 2026

Repairability and CE marking: it's decided at design, not at the end of the project

Discovering during pre-certification that a product does not pass the EMC, means going back to routing. The repairability index is decided when choosing screws and connectors. Compliance is an architectural choice.

Éco-conceptionMarquage CERéparabilitéConformité
A working prototype is 10% of the journey
June 12, 2026

A working prototype is 10% of the journey

In hardware, failure rarely occurs in the proof of concept. It occurs when transitioning from prototype to series: EVT, DVT, PVT, and the documentation that makes production reproducible.

HardwareNPIEVT DVT PVTIndustrialisation
The fundamentals of agility: manifesto, principles, Kanban
June 11, 2026

The fundamentals of agility: manifesto, principles, Kanban

A revision sheet on the basics of agility: the 2001 Manifesto, its 4 values and 12 principles, the difference between framework and method, and the Kanban board.

AgilityAgile ManifestoKanban
Understanding Scrum: roles, artifacts, events
June 10, 2026

Understanding Scrum: roles, artifacts, events

A revision sheet on Scrum: where the word comes from, self-managed teams, sprints and MVP, risk management, roles, artifacts, the five events and planning poker.

ScrumSprintProject management
Design Thinking: from research to ideation
June 9, 2026

Design Thinking: from research to ideation

A revision sheet on Design Thinking: the divergence/convergence rhythm, research techniques, synthesis tools, ideation, and how to connect it to Lean Startup and agility.

Design ThinkingInnovationUser research