Philippe Ensarguet (Orange) starts from a seemingly administrative question — designing an upskilling path toward the architect role — to articulate a deeper intuition. This role is critical to the "platformization" of a telecom operator (bringing together the IT and network worlds, separated for decades, into programmable platforms). Yet it becomes critical at the exact moment its training pipeline is breaking down: demand for architects is rising (platforming, cloud-native, IA agentique shift complexity from components to the relationships between them), while the talent supply chain is dismantling itself. The traditional path ran through years of writing code; AI now absorbs an increasing share of that work. If the entry-level work that once forged architects is delegated to machines, where will the next generation come from?
The answer, according to Ensarguet, has been sitting on the shelf for fifty years. He returns to the original meaning of a pattern, as defined by building architect Christopher Alexander (1977): a named, recurring solution to a problem within a context, including the forces in tension and the consequences. It is not a recipe — it is transmissible judgment. The Gang of Four book (1994), which emerged from the Hillside Group convened by Kent Beck and Grady Booch, gave the industry its first shared vocabulary — its lasting value being the format (problem, context, forces, solution, consequences), not the 23 patterns themselves.
Ensarguet traces a genealogical tree: POSA (1996), Fowler (2002), Hohpe & Woolf (2003), Nygard (2007, Circuit Breaker), the cloud catalogues (2012+), microservices and Kubernetes (2018-2019), up to the agentic corpora now taking shape (Anthropic's "Building Effective Agents," Andrew Ng's four patterns, the two-axis framework by Huang & Zhou in 2026 — echoing the GoF's two axes thirty years earlier). Beneath the catalogues, six invariant forces persist: coupling/cohesion, abstraction boundary, failure isolation, state governance, indirection, feedback loop — joined by a seventh, the non-determinism introduced by agentic systems.
This "pattern literacy" is the resilient skill, and the only one that finally bridges IT and network (control plane / user plane = indirection; network slicing = Bulkhead; intent-based networking = feedback loop). AI then becomes an ally: freed from implementation, training can become deliberate — the machine produces options, the human supplies the judgment. What must be taught is the grammar, not the catalogues: catalogues age; the way of thinking they encode does not. Ensarguet is publishing this thesis precisely to stress-test it through debate.