Editorial article **SFEIR AI** published on sfeir.com on **September 6, 2026** (~9,000 characters, seven sections, two sources noted). It recaps an episode of the **DataGen** podcast hosted by **Robin Conquet**, recorded at the **Dev Summit** co-organized by **Adeo** and **Decathlon** (Lille, **May 26-28, 2026**, more than **2,000** attendees), with **Matthieu Grymonprez**, who heads digital, tech, and data at Adeo (Leroy Merlin, Weldom, Obramat), and **Romain Taillade**, Global CTO of Decathlon. Three takeaways. **(A)** The platformization carried out over five years to absorb Leroy Merlin's marketplace (**60,000** in-store references, several million online) and Decathlon's expansion (**more than 50** countries) was not aimed at agentic AI, but forms its foundation: *"the platform built the muscles, the age of intelligence builds the nervous system."* **(B)** Three named workstreams — the development **harness**, zone-based **security** across the IT system (zero agentic activity on payment, the checkout flow, and the supply chain), and **data semantics**, tackled by vertical and where Adeo admits it is in debt. **(C)** A precedent the group paid for: self-service BI produced more than **150,000 dashboards** before the return to certified data products. Grymonprez's framing sentence holds it all together — *"an agent has no common sense"*: it applies the definition as given and accelerates disorder wherever it is lacking. Continues, with the same executive, [[alafrench-grymonprez-adeo-ia-agentique-grands-groupes-2026-06-18]].
#Agentic AI#platformization#API-exposed business domains
SFEIR AI (voix éditoriale du cabinet) · article non signé individuellement. Restitue un entretien de Matthieu Grymonprez (Adeo) et Romain Taillade (Decathlon).
Televised debate on BFM Business (*Tech & Co Business* program, "The Debate" segment, 17 minutes) with **Rémi Jacquet** (CEO of Cast Software France, founder in 2023 of a think tank of about a hundred CIOs on the impact of generative AI on development, partnership with Cigref / Epita) and **Didier Girard** (CTO and CEO of **SFEIR**, a French IT services company (ESN) of about 1,000 people). Strong theses: *"writing code has become an anti-pattern"* (Girard), AI produces code of higher quality than most engineers and is *"2 to 10× more efficient"* — this is a reality, but the profession is not disappearing. The developer becomes a **conductor / agent manager / arbiter**, 14-day sprints are replaced by one-hour to half-day ***bolts***, the **Pizza Team** (8-10 people) no longer works in the agentic era, a new role is emerging — the ***product engineer*** —, the lifespan of a skill drops from **10 years to 1 year**, and **token** consumption becomes the *fuel* of value creation (NVIDIA anecdote allegedly paying bonuses in tokens, taxi driver metaphor for a driver who doesn't consume gas). SFEIR claims *"1,000 people, production capacity of 10,000"*. On the Cast side: positioning on ***harness engineering*** (deterministic vs probabilistic AI, control and guardrails), aligned with Sylvain Duranton's (BCG X) op-ed in *Les Échos* stating that *"an agent = an LLM + harnesses"*. Historical pivot: 2024 *prompt engineering* → 2025 *context engineering* → 2026 *harness engineering*. Key warning: *"the stronger AI becomes, the more we let our guard down — the more risks there are"* (Jacquet). Pivotal role of HR in the transformation, complete overhaul of the SDLC, recommendation to juniors to solidify software architecture fundamentals (*"code is the score, you need to master the symphony"*).