# kamelman-thoughtworks-service-as-software-economic-model-ai-agents-2025-12-03

## Veille

**Matt Kamelman** publishes on the **Thoughtworks blog** on **December 3, 2025** a conceptual pivot article that formalizes the major economic shift in intellectual services: ***"Service-as-Software" (SaS)*** as a **new economic model** succeeding **SaaS**. **Pivot distinction**: ***"Traditional SaaS is about tools: software that enables humans to solve problems. Service-as-Software (SaS), meanwhile, sells outcomes."*** SaS is *"a new class of tool that doesn't just enable work but instead automates the reasoning process itself"*. **Pricing shift**: ***"Companies will no longer pay for an agent based on seats or features. Instead they'll pay based on its demonstrated alignment and impact."*** **Three archetypal SaS agent examples**: marketing agents (end-to-end campaigns), financial agents (forecast modeling), operations agents (request triage). **Three capabilities** of agentic SaS systems: (1) operating dynamically on **goals**, not fixed workflows; (2) retaining **memory** across interactions; (3) autonomously coordinating across tools and APIs. **The "Cognitive Contract" — three principles**: (1) **Interpretable and auditable** — *"users need to be able to understand why the system made a decision"*; (2) **Aligned with human goals** — *"the system's objectives must match human intent and ethical boundaries"*; (3) **Trained and iterated in real time** — *"systems continuously refine behavior based on feedback"*. **New organizational role**: the ***"cognitive orchestrator"***, with three operational functions: (a) **feedback loop design** (step-by-step review); (b) **managing uncertainty with guardrails** (business rules + circuit breakers); (c) **measuring alignment** (a quantifiable alignment score). **Structuring historical analogy**: *"mainframes → client-server → web/cloud, where the cognitive contract remained the same: humans had to instruct the machine"*; today this contract **is evolving toward collaboration** between human and machine. **Major relevance**: this is the clearest **Anglo-Saxon conceptual formalization** of the **billable hours / per-seat → outcome-based** shift observed empirically at **McKinsey/Sternfels** (60,000 = 40,000 humans + 20,000 agents, January 2026), **VoxComm/Mandese** (March 2026, agencies), **Bain Rule of 40** (April 2026, SaaS), **Bain cross-system labor $100B** (May 2026). The term ***"Service-as-Software"*** is set to become **canonical**, much as *"Software-as-a-Service"* was in the 2000s-2010s. To be leveraged for **2026 strategic vocabulary** in executive committee presentations, agentic business cases, and pricing models.

## Titre Article

Service-as-Software: A new economic model for the age of AI agents

## Date

2025-12-03

## URL

https://www.thoughtworks.com/insights/blog/generative-ai/service-as-software-a-new-economic-model-for-age-of-ai-agents

## Keywords

Matt Kamelman, Thoughtworks blog, Service-as-Software, SaS, new economic model AI agents, SaaS vs SaS distinction, tools for humans vs outcomes, automating reasoning process, demonstrated alignment and impact, no longer pay seats or features, marketing agents campaigns end-to-end, financial agents forecasting, operations agents triage, three capabilities agentic systems, dynamic goals not fixed workflows, memory across interactions, autonomous coordination tools APIs, cognitive contract three principles, interpretable and auditable, aligned with human goals ethical boundaries, trained iterated real time, cognitive orchestrator, feedback loop design, managing uncertainty guardrails, circuit breakers business rules, measuring alignment quantifiable score, mainframes client-server web/cloud SaS evolution, cognitive contract human machine collaboration, alignment trust mechanisms commercial deployment, December 3 2025, Thoughtworks generative AI blog, terme canonique 2026, vocabulaire stratégique outcome-based, post-SaaS pricing model

## Authors

**Matt Kamelman** — auteur de l'article publié sur le blog Thoughtworks le 3 décembre 2025. **Thoughtworks** est un cabinet de conseil en technologie et software engineering global, fondé en 1993, fortement associé à des figures emblématiques du software engineering (Martin Fowler, Rebecca Parsons, Sam Newman, etc.) et à des contributions historiques majeures (continuous delivery, microservices, expansion XP/Agile). Le blog Thoughtworks est une référence de premier plan dans l'écosystème software engineering et architectural.

## Ton

**Profile**: A conceptual essay-article on the Thoughtworks blog, roughly a 7-10 minute read. Target audience: technology leaders, CTOs/CIOs, product strategists, software economists, observers of the AI transformation. Secondary audience: AI architects, business-model designers, PE/VC software investors seeking a conceptual framework to assess the 2026 pricing shifts.

**Style**: An institutional Thoughtworks voice — clear English, a **conceptual-prescriptive** tone, structured around "here is the new framework," with definitions, binary distinctions (SaaS vs SaS), and numbered principles (3 for the cognitive contract, 3 agentic capabilities, 3 cognitive orchestrator functions). No empirical figures, no quantified client case studies — this is a **conceptual positioning piece**, not a research report.

**Key aphorisms**:
- ***"Service-as-Software (SaS), meanwhile, sells outcomes."*** (the pivot formula).
- ***"A new class of tool that doesn't just enable work but instead automates the reasoning process itself."*** (the definition).
- ***"Companies will no longer pay for an agent based on seats or features. Instead they'll pay based on its demonstrated alignment and impact."*** (the pricing shift).
- ***"The cognitive contract remained the same: humans had to instruct the machine."*** (the historical analogy that structures the whole argument).

**Elaborated metaphors**:
- ***Cognitive contract*** — a legal-philosophical metaphor: there exists an **implicit contract** between human and machine defining who decides, who executes, who is accountable. This contract **is changing** with AI agents. A powerful metaphor because it **structures** the ethical and operational discussion.
- ***Service-as-Software*** — a symmetry with **Software-as-a-Service**: the suffix is inverted. SaaS = software consumed as a service; SaS = a service consumed like software (deterministic, measurable, automatable, scalable).
- ***Cognitive orchestrator*** — a new role figure, the human who **orchestrates** machine cognition. Converges with *"agent harness engineering"* (Osmani, 2026-04-19), *"agent supervisor"* (Mornati, 2026-03-14), *"strategic judge + agent manager"* (Wescale, 2026-05-03).
- ***Mainframes → client-server → web/cloud → SaS*** — the historical analogy traces a **trajectory** in which each generation redefined the human-machine contract.

**Epistemic stance**: **conceptual and prescriptive**, with no empirical figures. Kamelman offers a **framework** rather than an observation. The content's strength comes from (a) the **canonical formula** *Service-as-Software*, (b) the **structuring into triples** (3 capabilities, 3 principles, 3 functions), (c) the **historical analogy** that legitimizes the rupture as a natural evolution.

**Authority**: built on (a) the **Thoughtworks brand** (a software-engineering reference for 30 years), (b) the **conceptual clarity** of the binary distinctions, (c) the **absence of hype** — no far-fetched figures, no prophecies — just a framework, (d) **consistency with the 2025-2026 corpus** on outcome-based pricing. Limitation: no client case studies, no empirical validation, no observable success criteria.

## Pense-betes

- **Date / source**: **December 3, 2025**, **Thoughtworks blog** (*Insights / Blog / Generative AI* section). Author: **Matt Kamelman**.
- **Pivot concept**: ***Service-as-Software (SaS)*** — succession to SaaS in the age of AI agents.
- **Canonical formula**: ***"SaaS sells tools, SaS sells outcomes."*** ### The SaaS vs SaS distinction | Dimension | SaaS (Software-as-a-Service) | SaS (Service-as-Software) | |-----------|------------------------------|---------------------------| | **Sold** | Tools / capabilities | Outcomes / impact | | **Action** | Enable humans to solve problems | Automate reasoning itself | | **Pricing** | Seats, features, usage | Demonstrated alignment + impact | | **Mechanics** | Software executes human instructions | System operates on dynamic goals | | **Memory** | Often stateless | Memory across interactions | | **Coordination** | Often intra-application | Autonomous, cross-tool, cross-API | | **Cognitive contract** | Humans instruct the machine | Humans + machines collaborate | ### The three capabilities of an agentic SaS system 1. **Dynamic goals** — operate on the basis of objectives, not fixed workflows. 2. **Memory across interactions** — retain context between sessions. 3. **Autonomous coordination** — orchestrate tools and APIs without human intervention. ### The Cognitive Contract — three principles | # | Principle | Kamelman's definition | |---|----------|---------------------| | **1** | **Interpretable and auditable** | *"Users need to be able to understand why the system made a decision."* | | **2** | **Aligned with human goals** | *"The system's objectives must match human intent and ethical boundaries."* | | **3** | **Trained and iterated in real time** | *"Systems continuously refine behavior based on feedback."* | ### The Cognitive Orchestrator — three functions | # | Function | Description | |---|----------|-------------| | **a** | **Feedback loop design** | Review step by step, instrument learning loops | | **b** | **Managing uncertainty with guardrails** | Business rules + circuit breakers to contain drift | | **c** | **Measuring alignment** | Quantifiable alignment score (agent KPI) | ### Three archetypal SaS agent examples | Domain | Agent type | |---------|--------------| | Marketing | **End-to-end campaigns** (briefing → creative → media → measurement) | | Finance | **Forecast modeling** | | Operations | **Request triage** | ### The structuring historical analogy ``` Mainframes ↓ Client-server ↓ Web/Cloud ↓ (cognitive contract remains: humans instruct machine) SaS / Agentic systems ↓ (cognitive contract evolves: humans + machines collaborate) ``` > *"The cognitive contract remained the same: humans had to instruct the machine."* — every past generation upheld this contract. The **agentic** rupture is the first to renegotiate it. ### Connection to the watch dossier #### "Billable hours / per-seat → outcome-based" convergence
- **Kamelman/Thoughtworks** (2025-12-03): SaaS *seats and features* → SaS *demonstrated alignment and impact*. **Canonical Anglo-Saxon conceptual formalization**.
- **Sternfels/McKinsey** (OfficeChai 2026-01-14): *"migrating away from pure advisory work to outcomes-based model"*. **Application to consulting**.
- **VoxComm/Mandese** (March 2026): *"billable hours are dead, AI killed them"*, 4-shift outcome framework. **Application to agencies**.
- **Bain Rule of 40** (April 2026): *outcome-based pricing models could shift revenue from fixed seats to labor/operations economics*. **Application to SaaS**.
- **Bain cross-system labor** (May 2026): *accumulated execution data as moat*. **Application to enterprise**.
- → **Convergence**: Kamelman supplies the **conceptual vocabulary** (SaS) that **chronologically precedes** the sector manifestations (consulting, agencies, SaaS) and **unifies** them. The Kamelman fiche is the **conceptual pivot** of the *"outcome-based services"* cluster. #### "Cognitive orchestrator / agent supervisor" convergence
- **Kamelman**: *cognitive orchestrator* (feedback loop + guardrails + alignment scoring).
- **Osmani Agent Harness Engineering** (2026-04-19): *agent = model + harness*, ratchet principle.
- **Mornati** *What is a Developer When We Use Coding Agents?* (2026-03-14): *Agent Supervisor*.
- **Wescale Augmented Software Factory** (2026-05-03): *Strategic Judge + Agent Manager*.
- **Habert PROJ-AI** (2026-05-05): *six zones (DOCS/IDEAS/DR/OUT/DOCTRINE/AGENT) + Decision Records, 7 dimensions*.
- **Frizzo** (2026-05-05): *"the new bottleneck is supervision"*.
- → **Cross-cutting convergence**: a **new organizational role** is emerging, named differently by each author but with **three invariant functions**: feedback design, guardrails, alignment measurement. #### "Cognitive contract" convergence
- **Kamelman**: *cognitive contract* (interpretable + aligned + iterated).
- **Talisman Ontology Pipeline Refresh** (2026-05-04): *AI augment trained engineers, not replace*.
- **Karpathy** (2026-04-29): *outsource thinking but not understanding*.
- **Osmani Cognitive Surrender** (2026-05-05): Cognitive Offloading (healthy) vs Cognitive Surrender (toxic).
- **Anthropic Skill-Formation** (cited by Osmani): 17% lower comprehension among junior engineers.
- → **Convergence**: the human-machine **cognitive contract** is being **renegotiated** across multiple axes (services, taxonomies, code, design, learning). #### "Interpretability + auditability" convergence
- **Kamelman**: principle 1 of the cognitive contract.
- **DORA ROI 2026** (2026-04-21): *AI is an amplifier* — measurement and governance are prerequisites.
- **Habert PROJ-AI**: Decision Records, 7 dimensions.
- **Anthropic political bias** (2025-11-13).
- → **Convergence**: auditability has become a **structural prerequisite** for agents in production. #### FR / European position vs. Anglo-Saxon
- **Kamelman/Thoughtworks**: Anglo-Saxon conceptual formalization.
- **Wescale** (FR): *Augmented Software Factory* → equivalent FR terminology with an industrial-military framing.
- **Habert** (FR): *PROJ-AI* + doctrine.
- **Tatsyi/Raiffeisen Bank Ukraine**: organizational testimony.
- → **Connection**: SaS is the **canonical Anglo-Saxon vocabulary**; Wescale and Habert propose **alternative** or **complementary** FR vocabularies. For FR executive-committee presentations, leverage SaS (international English) and anchor it in FR vocabulary. ### Limitations to flag
- **Conceptual article** with no empirical validation — no client case studies, no commercial figures, no actual pricing model (which metrics of alignment/impact, measured by whom).
- **3 agent examples** (marketing / finance / operations) **not detailed**: no named actors, no results, no timeline.
- **"Demonstrated alignment and impact" as a pricing metric**: Kamelman provides **no** measurement tools. Yet this is precisely the **critical operational workstream** needed to make SaS commercially viable.
- **No engagement with obstacles**: regulation, legal liability in the event of agent error, cybersecurity, memory storage (GDPR), tools/API interoperability.
- **Thoughtworks blog source** ≠ peer review; obvious institutional positioning (Thoughtworks sells agentic services, so SaS serves its commercial interest).
- **Author Matt Kamelman**: a sparsely documented public profile outside Thoughtworks — brand authority more than authorial authority.
- **SaS concept = a remix of pre-existing ideas**: *outcomes-based pricing* (Sternfels, January 2026), *value-based models* (Mandese, March 2026), *outcome-based pricing as tailwind* (Bain, April 2026) — Kamelman **precedes them chronologically** (December 2025), but it is not certain the SaS term will prevail over *outcome-based services*, *agentic services*, or other competing formulations. ### To be leveraged for
- **Executive committee / board presentations**: **2026 strategic vocabulary** — *Service-as-Software* as a **canonical term** to frame pricing shifts.
- **AI architects / product strategists**: the **3 agentic capabilities + 3 cognitive contract principles + 3 cognitive orchestrator functions** = a design grid for agents in production.
- **Pricing strategy / CFO**: the *"no longer pay for seats, pay for alignment + impact"* argument — a structured pricing shift.
- **HR / org design**: the ***cognitive orchestrator*** role as a **new role to formalize** (job description, training, performance measurement).
- **Connecting the outcome-based 2025-2026 cluster**: Kamelman = **chronological conceptual pivot** preceding the sector manifestations; to cite when introducing analyses of the *"billable hours killed by AI"* cluster.
- **FR / European connection**: SaS as the **canonical Anglo-Saxon term**; anchor it in FR vocabulary (Wescale Augmented Software Factory, Habert PROJ-AI) for FR executive committees.

## RésuméDe400mots

**Matt Kamelman** publishes on the **Thoughtworks blog** on **December 3, 2025** a conceptual pivot article formalizing the major economic shift in intellectual services: ***"Service-as-Software" (SaS)*** as a **new economic model** succeeding **SaaS**.

**Pivot distinction**: ***"Traditional SaaS is about tools: software that enables humans to solve problems. Service-as-Software (SaS), meanwhile, sells outcomes."*** SaS is *"a new class of tool that doesn't just enable work but instead automates the reasoning process itself"*. **Pricing shift**: ***"Companies will no longer pay for an agent based on seats or features. Instead they'll pay based on its demonstrated alignment and impact."***

**Three capabilities** of agentic SaS systems: (1) dynamic goals, not fixed workflows; (2) memory across interactions; (3) autonomous cross-tool/API coordination.

**Cognitive Contract — three principles**: (1) **Interpretable and auditable**; (2) **Aligned with human goals**; (3) **Trained and iterated in real time**.

**New organizational role**: ***cognitive orchestrator***, with three functions: (a) feedback loop design; (b) managing uncertainty with guardrails; (c) measuring alignment (a quantifiable score).

**Three archetypal SaS agent examples**: marketing (end-to-end campaigns), finance (forecast modeling), operations (request triage).

**Historical analogy**: *"mainframes → client-server → web/cloud, where the cognitive contract remained the same: humans had to instruct the machine"*. The agentic rupture is the first to **renegotiate** this contract.

**Connection to the watch dossier**: Kamelman supplies the **conceptual vocabulary** (SaS) that **chronologically precedes** the 2026 sector manifestations and **unifies** them:
- **Sternfels/McKinsey** (January 2026) — application to consulting (60,000 = 40,000 humans + 20,000 agents, *pure advisory → outcomes-based*).
- **VoxComm/Mandese** (March 2026) — application to agencies (*billable hours are dead*, margins 30%→10%).
- **Bain Rule of 40** (April 2026) — application to SaaS (outcome-based pricing tailwind).
- **Bain cross-system labor $100B** (May 2026) — application to enterprise (accumulated execution data moat).

**"Cognitive orchestrator / agent supervisor" convergence** with **Osmani Agent Harness Engineering**, **Mornati Agent Supervisor**, **Wescale Strategic Judge + Agent Manager**, **Habert PROJ-AI Decision Records**, **Frizzo *bottleneck is supervision***. **"Cognitive contract" convergence** with **Talisman Ontology Pipeline Refresh** (AI augment not replace), **Karpathy** (outsource thinking not understanding), **Osmani Cognitive Surrender**.

**Limitations**: a conceptual article with no empirical validation, no actual pricing model (metrics for *alignment*/*impact* still to be defined), no engagement with obstacles (regulation, legal liability, GDPR, interoperability), an evident Thoughtworks commercial positioning, and a SaS term not yet canonical against competing formulations (outcome-based services, agentic services).

To be leveraged for executive committees (strategic vocabulary), AI architects (a design grid), CFOs (pricing shift), HR (cognitive orchestrator as an emerging role), and connecting the outcome-based 2025-2026 cluster (chronological conceptual pivot).

## GrapheDeConnaissance

- Matt Kamelman —publie→ Service-as-Software: A new economic model (DOCUMENT, 0.97)
- Thoughtworks —publie→ article Kamelman 2025-12-03 (DOCUMENT, 0.96)
- Service-as-Software —remplace→ SaaS (CONCEPT, 0.96)
- SaaS —permet→ tools enabling humans (CONCEPT, 0.95)
- Service-as-Software —permet→ outcomes via automated reasoning (CONCEPT, 0.96)
- Pricing SaS —est_basé_sur→ "Pay based on demonstrated alignment and impact" (CONCEPT, 0.96)
- Pricing SaS —remplace→ pricing par seats or features (CONCEPT, 0.95)
- dynamic goals + memory + autonomous coordination —fait_partie_de→ Systèmes agentic SaS (TECHNOLOGIE, 0.96)
- interpretable/auditable + aligned with human goals + trained/iterated real time —fait_partie_de→ Cognitive Contract (CONCEPT, 0.96)
- Cognitive Orchestrator —est_instance_de→ nouveau rôle organisationnel (CONCEPT, 0.95)
- feedback loop design + guardrails management + measuring alignment —fait_partie_de→ Cognitive Orchestrator (CONCEPT, 0.96)
- Marketing agent SaS —permet→ campagnes end-to-end (CONCEPT, 0.93)
- Financial agent SaS —permet→ modélisation prévisions (CONCEPT, 0.93)
- Operations agent SaS —permet→ triage des demandes (CONCEPT, 0.93)
- mainframes → client-server → web/cloud → SaS —fait_partie_de→ évolution informatique (CONCEPT, 0.95)
- Cognitive Contract —affirme_que→ humans had to instruct the machine (AFFIRMATION, 0.95)
- Cognitive Contract —affirme_que→ humans + machines collaborate (AFFIRMATION, 0.95)
- Bilan Kamelman SaS —prédit→ bascules outcome-based Sternfels McKinsey, VoxComm/Mandese, Bain Rule of 40, Bain cross-system labor (AFFIRMATION, 0.94)
- Bilan Kamelman SaS —converge_avec→ bascules sectorielles (CONCEPT, 0.93)
- Cognitive Orchestrator —converge_avec→ Osmani Agent Harness Engineering, Mornati Agent Supervisor, Wescale Juge Stratégique + Manager d'Agents, Habert PROJ-AI Decision Records (CONCEPT, 0.93)
- Cognitive Contract —converge_avec→ Talisman Ontology Pipeline Refresh AI augment not replace, Karpathy outsource thinking not understanding, Osmani Cognitive Surrender (CONCEPT, 0.92)

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Canonical: https://www.thekb.eu/en/fiches/kamelman-thoughtworks-service-as-software-economic-model-ai-agents-2025-12-03/