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Field notes from production AI.

Long-form essays from the engineers shipping AI inside payers, hospitals, energy operators and proptech platforms. Written for technology leaders who care more about what runs in production than what trended last week.

All essays

Field notes, sorted by recency.

1867 essays
TECHNOLOGY IDP Build vs Buyfor Retail. Retail engineering runs on a seasonalclock. Buy the portal, build the golden… IDP BUILD/ BUY IDP Build Best fit for your caseSimpler to operateLower switching cost Buy Added complexityHeavier toolingSteeper learning curve
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IDP Build vs Buy for Retail

Retail engineering runs on a seasonal clock. Buy the portal, build the golden paths, and time the whole programme so nothing lands near peak trading.

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AI GOVERNANCE A Buyer's Guideto AI audittrails. A Buyer's Guide to AI audit trails helpsenterprise leaders connect decision… BUYER AI DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to AI audit trails

A Buyer's Guide to AI audit trails helps enterprise leaders connect decision reconstruction, retrieval capture, version pinning, retention, and human action logging to a trail that answers the question someone will ask. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Dynamic Pricing AI:Optimization Withoutthe Backlash. Dynamic Pricing AI helps enterpriseleaders connect price elasticity… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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Dynamic Pricing AI: Optimization Without the Backlash

Dynamic Pricing AI helps enterprise leaders connect price elasticity modelling, constraint design, fairness boundaries, explainability, and customer perception to optimization that survives public scrutiny. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI What Conversationstate managementActually Costs. What Conversation state managementActually Costs explains the engineering… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
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What Conversation state management Actually Costs

What Conversation state management Actually Costs explains the engineering, control, change, and risk costs behind the first implementation in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING Internaldeveloperplatforms UnderAudit. Internal developer platforms Under Audithelps VP Engineering / Head of… STRATEGY DELIVERY GOVERNANCE SCALE INTERNALDEVELOPER
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Internal developer platforms Under Audit

Internal developer platforms Under Audit helps VP Engineering / Head of Infrastructure leaders test controls, evidence, ownership, failure handling, and recovery. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toShadow deploymentfor models. A Buyer's Guide to Shadow deployment formodels helps CTO / Head of AI leaders… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 BUYER SHADOW
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A Buyer's Guide to Shadow deployment for models

A Buyer's Guide to Shadow deployment for models helps CTO / Head of AI leaders connect traffic mirroring, input parity, output capture, comparison metrics, and privacy and cost controls to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY RunbookAutomation forTechnology & SaaS. Automating a runbook nobody has writtendown encodes a guess. Write it, run it… PLAN BUILD MEASURE IMPROVE RUNBOOK
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Runbook Automation for Technology & SaaS

Automating a runbook nobody has written down encodes a guess. Write it, run it manually until it is boring, then automate the boring part and keep the judgement with a human.

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DATA ENGINEERING A Buyer's Guideto Schemaevolution. A Buyer's Guide to Schema evolutionhelps CDO / VP Data leaders connect… 01 Pilot 02 Team 03 Org 04 Scale BUYER SCHEMA
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A Buyer's Guide to Schema evolution

A Buyer's Guide to Schema evolution helps CDO / VP Data leaders connect compatibility model, versioning, consumer discovery, deprecation policy, and migration evidence to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Synthetic test datageneration UnderAudit. Synthetic test data generation UnderAudit helps teams connect evidence… 01 Pilot 02 Team 03 Org 04 Scale SYNTHETIC TEST
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Synthetic test data generation Under Audit

Synthetic test data generation Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY dbt at Scalefor Retail. A four-hour dbt run is fine in March anda problem in November. Build for peak… DBT SCALE DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
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dbt at Scale for Retail

A four-hour dbt run is fine in March and a problem in November. Build for peak: incremental models that survive restatements, tests on business rules, and CI that finishes.

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DATA ENGINEERING A Buyer's Guide toPoint-in-timecorrectness. A Buyer's Guide to Point-in-timecorrectness helps CTO / Head of AI… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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A Buyer's Guide to Point-in-time correctness

A Buyer's Guide to Point-in-time correctness helps CTO / Head of AI leaders connect decision timestamp, source event time, availability time, historical joins, and validation and leakage tests to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Warehouse CostOptimization forTechnology & SaaS. Warehouse Cost Optimization helps SaaSdata teams connect query attribution… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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Warehouse Cost Optimization for Technology & SaaS

Warehouse Cost Optimization helps SaaS data teams connect query attribution, model pruning, warehouse sizing, materialisation choices, and consumer accountability to the spend nobody owns. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guideto Agent spendcontrols. A Buyer's Guide to Agent spend controlshelps engineering leaders connect… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
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A Buyer's Guide to Agent spend controls

A Buyer's Guide to Agent spend controls helps engineering leaders connect per-task caps, loop detection, retry multipliers, attribution, and hard stops to cost limits that bind before the month ends. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI GOVERNANCE A Buyer's Guide toThird-party modelrisk. A Buyer's Guide to Third-party modelrisk helps enterprise leaders connect… BUYERTHIRD DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to Third-party model risk

A Buyer's Guide to Third-party model risk helps enterprise leaders connect model substitution rights, subprocessor chains, change notification, evaluation continuity, and exit paths to vendor risk that survives the vendor changing the model. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI GOVERNANCE AI governanceoperating modelsUnder Audit. AI governance operating models UnderAudit helps enterprise leaders connect… 01 Discover 02 Prototype 03 Harden 04 Roll out
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AI governance operating models Under Audit

AI governance operating models Under Audit helps enterprise leaders connect coverage reconciliation, population discovery, exception records, decision evidence, and operating effectiveness to governance that survives a completeness test. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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INSIGHTS Self-HealingInfrastructurefor Fintech. In fintech, automated remediation has tofix the symptom without hiding the… DESIGN SHIP OBSERVE REFINE SELF
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Self-Healing Infrastructure for Fintech

In fintech, automated remediation has to fix the symptom without hiding the defect or breaking the audit trail. Narrow, verified, rate-limited loops are what earn trust here.

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AI GOVERNANCE What Data residencyand sovereigntyActually Costs. What Data residency and sovereigntyActually Costs explains the engineering… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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What Data residency and sovereignty Actually Costs

What Data residency and sovereignty Actually Costs explains the engineering, control, change, and risk costs behind the first implementation in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING A Buyer's Guide toService mesh for AIworkloads. A Buyer's Guide to Service mesh for AIworkloads helps VP Engineering / Head of… BUYERSERVICE DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
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A Buyer's Guide to Service mesh for AI workloads

A Buyer's Guide to Service mesh for AI workloads helps VP Engineering / Head of Infrastructure leaders connect workload identity, traffic policy, retries and timeouts, observability, and failure isolation to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PRODUCT ENGINEERING A Buyer's Guide toEvent-drivenarchitecture. A Buyer's Guide to Event-drivenarchitecture helps VP Engineering / Head… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
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A Buyer's Guide to Event-driven architecture

A Buyer's Guide to Event-driven architecture helps VP Engineering / Head of Infrastructure leaders connect event contracts, delivery semantics, ordering, state and replay, and ownership and observability to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Copilotinteractiondesign UnderAudit. Copilot interaction design Under Audithelps AI leaders connect provenance… DESIGN SHIP OBSERVE REFINE COPILOT
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Copilot interaction design Under Audit

Copilot interaction design Under Audit helps AI leaders connect provenance cues, uncertainty, action, confirmation, and interaction to clear human decisions. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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INSIGHTS RunbookAutomation forEnergy. In energy, runbooks carry regulatorysteps and stop at the OT boundary. Write… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights ·

Runbook Automation for Energy

In energy, runbooks carry regulatory steps and stop at the OT boundary. Write the procedure, prove it manually, automate the diagnostics, and keep every judgement call with a person.

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QUALITY ENGINEERING A Buyer's Guide toAcceptance criteria forprobabilistic output. A Buyer's Guide to Acceptance criteriafor probabilistic output helps CTO /… 01 Assess 02 Design 03 Ship 04 Operate
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A Buyer's Guide to Acceptance criteria for probabilistic output

A Buyer's Guide to Acceptance criteria for probabilistic output helps CTO / Head of AI leaders connect task definition, quality dimensions, tolerance bands, failure taxonomy, and escalation and release gates to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Multi-RegionArchitecture forHospitality. Multi-Region Architecture helpshospitality engineering teams connect… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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Multi-Region Architecture for Hospitality

Multi-Region Architecture helps hospitality engineering teams connect booking availability, data residency, property proximity, failover testing, and cost to the always-on expectation guests actually have. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI AGENTS AI Agent ROI: TheUnit Economics ofDelegation. AI Agent ROI helps enterprise leadersconnect per-task cost, verification… ARCHITECTURE SECURITY RELIABILITY COST AI AGENT
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AI Agent ROI: The Unit Economics of Delegation

AI Agent ROI helps enterprise leaders connect per-task cost, verification burden, failure handling cost, volume assumptions, and retry behaviour to unit economics that hold at production scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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