Strategic frameworks and doctrines for the AI transition.
8 fiches · 25 entities · Updated
Navigating the AI transition in software has produced a wave of frameworks and doctrines, and this collection assembles them. Maturity models, mapping methods, operating principles, named methodologies: structured ways of deciding where to invest, what to automate, and how to sequence change. The value on offer is transferable mental models rather than particular tools — how to reason about the move from human to agentic lifecycles, how to weigh building against buying under fast-shifting capability, how to organize teams around agents. Several entries put forward their own lifecycles and maturity ladders for the agentic shift. Each fiche records a framework advanced in the field and the reasoning that underpins it.
Long-form essay by **Shubham Saboo** (X/Twitter) advancing a thesis on the Product Manager role in the age of agents: the next key skill is **not prompt engineering** but **Loop Engineering** — designing a *system that improves with every run* rather than writing the perfect prompt every time. A **loop** is a repeated cycle: change what shapes the agent's behavior → run it → evaluate the output → keep the change if quality rises, revert otherwise → **compound the learning** so the next version starts ahead. For a PM, the entry point is not code but the **durable artifacts** that encode their judgment: PRD-review skill, customer-call *summarizer*, evaluation rubric, launch checklist, research workflow, `CLAUDE.md`, prompt template, prioritization framework. Because they are reused, these artifacts **compound in both directions** — and **drift** silently (a CLAUDE.md that keeps growing, a checklist that gets ignored…): the model has not regressed, the artifacts have drifted unwatched. A loop has **5 parts**: trigger, action, **proof**, memory, **stop condition** (the most critical). **Evals** become PM work (testing the artifact against known examples: 3 good / 3 bad PRDs, 5 understood calls, 2 past launches). **Memory** lives on **GitHub** (the repo becomes "product memory": commits, diffs, eval results, decision log, rollback). Recommended first loop: a **weekly product signal loop** (every Friday). Taste remains central — but it now needs **proof**. Cites Boris (creator of Claude Code): "he no longer writes prompts, he writes loops."
Internal teardown report on the open-source release **`xai-org/x-algorithm`** (May 15, 2026) — the **For You feed** algorithm of **X (formerly Twitter)** in 2026, with four audience-tuned growth recommendation tracks (personal/founder, brand/company, generalized framework, client/consulting deliverable). **Pivot thesis**: ***« The famous 2023 weight table — replies count more than likes by a big multiplier — describes a system that no longer exists in this form. »*** The 2026 algorithm is a **transformer (Phoenix, Grok-1-derived)** that learns weights from your engagement history, scored against a **19-dimension multi-action surface**, gated by an offline content-understanding service (**Grox**). **The shape of scoring now matters far more than the numbers — and the numbers themselves are not in the public release**. **4-component architecture**: (1) **Home Mixer** (Rust, request-time orchestrator, hydrate → source → filter → score → select → filter); (2) **Thunder** (Rust, Kafka-fed in-memory store of recent posts, sub-ms lookups for in-network candidates); (3) **Phoenix** (JAX ML, two-tower retrieval + ranking transformer, ~Grok-1-derived); (4) **Grox** (offline, spam/safety/PTOS/banger classifiers + multimodal v5 embedder). **The 19 actions predicted by Phoenix** (key change vs. 2023): favorite, reply, repost, photo_expand, click, profile_click, vqv (video quality view gated by min duration), share, share_via_dm, share_via_copy_link, dwell, quote, quoted_click, follow_author, not_interested, block_author, mute_author, report, dwell_time (continuous). **Final score** = `Σ (weight × P(action))` modified by **3 structural multipliers**: (a) **OON_WEIGHT_FACTOR < 1** (out-of-network penalty), (b) **author diversity decay** `(1-floor) × decay_factor^position + floor` (exponential attenuation of repeated posts from the same author within a single render), (c) **video duration gate** (vqv only contributes if `video_duration_ms > MIN_VIDEO_DURATION_MS`). **Key caveat**: **no numeric weight value** (`FAVORITE_WEIGHT`, `OON_WEIGHT_FACTOR`, `AUTHOR_DIVERSITY_DECAY`, `MIN_VIDEO_DURATION_MS`...) is in the release — everything is `crate::params::*`, managed by an internal X feature-switch service for A/B testing. ***« Anyone telling you 'replies are worth N.N× more than likes in 2026' is fabricating a number that is not derivable from the OSS release. »*** **Key differences vs. 2023**: (1) removal of every hand-engineered feature (*« We have eliminated every single hand-engineered feature and most heuristics from the system »*); (2) a single model predicting 19 actions vs. multiple single-action models; (3) Grox separates content understanding from ranking; (4) new first-class signals (continuous dwell, gated vqv, follow_author, 3 share variants); (5) two-tower OON retrieval (vs. SimClusters+heuristics) with multimodal text+image+ASR-video embeddings. **Three layers of reach** (generalized framework): Eligibility (binary, Grox+filters) → Retrieval (probabilistic, two-tower ANN) → Ranking (continuous, weighted-sum + multipliers). **Two laws of mechanical growth**: (1) In-network is multiplicative, OON is additive; (2) The model's job is to predict you, not reward you. **Deliberate honesty boundary**: released Phoenix checkpoint = mini (2 layers, 4 heads, 256-dim, 537K sports-post corpus), not the production model; Thrift integrations stubbed (`panic!("Not implemented")` in `candidate_features.rs`); brand-safety lists, topic ID mappings, language penalties, ad-blending rules absent from the public release.
#X algorithm 2026#xai-org/x-algorithm#For You feed
Rapport interne **non signé** (typique des deliverables d'analyse interne / brouillon de livrable client). Sources primaires citées : (a) le repo public **`xai-org/x-algorithm`** (release 15 mai 2026) · (b) les `README.md` du repo et de ses sous-modules (`home-mixer/`, `phoenix/`, `thunder/`, `grox/`) · (c) le code source Rust (Home Mixer, Thunder) et Python/JAX (Phoenix, Grox) inspecté directement avec citations file:line. Le rapport est explicitement écrit en posture *"what we observe in the public source release · and what it implies for measurable growth interventions"* — registre de teardown analytique avec discipline d'honnêteté épistémique (section A.3 *"Honesty boundary"* listant exhaustivement ce qui n'est pas dérivable de l'OSS).
Deep Research - AI4* Revolution - 6 pillars of software production - Copilots→Agents transition - Vibe vs Check paradox - FinOps for AI crisis - Governance as critical path - GenAI Landing Zone
IA générative strategic framework - 4 deployment quadrants - Access paradox - Data as moat - Strategic differentiation - Harvard Business Review - Bharat N. Anand - Andy Wu
#generative AI strategy#competitive advantage#four quadrants framework
Bharat N. Anand (NYU Stern School of Business Dean) · Andy Wu (Harvard Business School)