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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
DATA ENGINEERING A Buyer's Guide toVector databaseselection. A Buyer's Guide to Vector databaseselection helps CTO / Head of AI leaders… BUYERVECTOR DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to Vector database selection

A Buyer's Guide to Vector database selection helps CTO / Head of AI leaders connect index and distance model, metadata filtering, update semantics, scale and tenancy, and operational controls to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toSmall languagemodels in production. A Buyer's Guide to Small language modelsin production helps CTO leaders connect… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 BUYER SMALL
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A Buyer's Guide to Small language models in production

A Buyer's Guide to Small language models in production helps CTO leaders connect task fit, routing, latency, hosting, and evaluation to production economics. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING Secrets managementfor agents UnderAudit. Secrets management for agents UnderAudit helps CISO / VP Security leaders… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
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Secrets management for agents Under Audit

Secrets management for agents Under Audit helps CISO / VP Security leaders test controls, evidence, ownership, failure handling, and recovery. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toModel routing andfallback. A Buyer's Guide to Model routing andfallback helps engineering leaders… 01 Pilot 02 Team 03 Org 04 Scale BUYER MODEL
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A Buyer's Guide to Model routing and fallback

A Buyer's Guide to Model routing and fallback helps engineering leaders connect behavioural difference on failover, prompt portability, quality tiers, silent degradation, and failing closed to fallback that does not quietly change your answers. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guideto Agent toolcalling. A Buyer's Guide to Agent tool callinghelps engineering leaders connect… 01 Discover 02 Prototype 03 Harden 04 Roll out
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A Buyer's Guide to Agent tool calling

A Buyer's Guide to Agent tool calling helps engineering leaders connect parameter correctness, tool selection errors, schema design, validation, and failure feedback to reliability measured on outcomes rather than call rates. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PRODUCT ENGINEERING Technical debtportfolios UnderAudit. Technical debt portfolios Under Audithelps CTO / VP Engineering leaders test… 01 Discover 02 Prototype 03 Harden 04 Roll out
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Technical debt portfolios Under Audit

Technical debt portfolios Under Audit helps CTO / VP Engineering leaders test controls, evidence, ownership, failure handling, and recovery. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI GOVERNANCE Acceptable usepolicy designUnder Audit. Acceptable use policy design Under Audithelps enterprise leaders connect… PLAN BUILD MEASURE IMPROVE ACCEPTABLE
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Acceptable use policy design Under Audit

Acceptable use policy design Under Audit helps enterprise leaders connect enforcement evidence, attestation limits, violation records, exception handling, and communication proof to policy that demonstrates operation rather than existence. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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DATA ENGINEERING Master datamanagement UnderAudit. Master data management Under Audit helpsCDO / VP Data leaders test controls… 01 Scope 02 Build 03 Launch 04 Iterate
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Master data management Under Audit

Master data management Under Audit helps CDO / VP Data leaders test controls, evidence, ownership, failure handling, and recovery. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY AI Adoption Strategy:Why Half of EnterprisesSee Zero ROI. AI Adoption Strategy helps enterpriseleaders connect use case selection… STRATEGY DELIVERY GOVERNANCE SCALE AI ADOPTION
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AI Adoption Strategy: Why Half of Enterprises See Zero ROI

AI Adoption Strategy helps enterprise leaders connect use case selection, workflow integration, measurement baselines, ownership, and deployment reality to the returns most programmes fail to produce. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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DATA ENGINEERING Point-in-timecorrectness UnderAudit. Point-in-time correctness Under Audithelps CDO / VP Data leaders test… 01 Scope 02 Build 03 Launch 04 Iterate
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Point-in-time correctness Under Audit

Point-in-time correctness Under Audit helps CDO / VP Data leaders test controls, evidence, ownership, failure handling, and recovery. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY AI Change Management:The Deployment LayerNobody Engineers. AI Change Management helps enterpriseleaders connect workflow redesign, role… MODEL DEPLOY MONITOR ITERATE AI
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AI Change Management: The Deployment Layer Nobody Engineers

AI Change Management helps enterprise leaders connect workflow redesign, role clarity, trust calibration, escalation paths, and measurement to the deployment layer that determines whether capability becomes practice. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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CLOUD & DEVOPS Consent andpreference dataUnder Audit. Consent and preference data Under Audithelps data leaders connect purpose… ARCHITECTURE SECURITY RELIABILITY COST CONSENTPREFERENCE
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Consent and preference data Under Audit

Consent and preference data Under Audit helps data leaders connect purpose, versions, propagation, deletes, and evidence to defensible preference enforcement. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Inference costattribution UnderAudit. Inference cost attribution Under Audithelps platform leaders connect requests… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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Inference cost attribution Under Audit

Inference cost attribution Under Audit helps platform leaders connect requests, models, tenants, fallback, and billing to defensible inference allocation. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Prompt versioningUnder Audit. Prompt versioning Under Audit helps AIleaders connect prompt, composition… 01 Discover 02 Prototype 03 Harden 04 Roll out
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Prompt versioning Under Audit

Prompt versioning Under Audit helps AI leaders connect prompt, composition layer, release, evaluation gate, and prompt to reconstructable prompt behaviour. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Spot InstanceStrategy forEnergy. Spot Instance Strategy helps energyengineering teams connect workload… ASSESS ADOPT OPTIMIZE GOVERN
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Spot Instance Strategy for Energy

Spot Instance Strategy helps energy engineering teams connect workload interruption tolerance, long-running job checkpointing, diversification, deadline risk, and the OT boundary to compute that can safely run on reclaimable capacity. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PRODUCT ENGINEERING A Buyer's Guide toRoadmap sequencingfor AI. A Buyer's Guide to Roadmap sequencingfor AI helps CTO / Head of AI leaders… BUYERROADMAP DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to Roadmap sequencing for AI

A Buyer's Guide to Roadmap sequencing for AI helps CTO / Head of AI leaders connect risk inventory, evaluation baseline, data readiness, control maturity, and expansion gates to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI GOVERNANCE What PII redactionpipelines ActuallyCosts. What PII redaction pipelines ActuallyCosts explains the engineering, control… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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What PII redaction pipelines Actually Costs

What PII redaction pipelines Actually Costs explains the engineering, control, change, and risk costs behind the first implementation across production AI. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING A Buyer's Guide toSelf-healinginfrastructure. A Buyer's Guide to Self-healinginfrastructure helps VP Engineering /… BUYER SELF DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
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A Buyer's Guide to Self-healing infrastructure

A Buyer's Guide to Self-healing infrastructure helps VP Engineering / Head of Infrastructure leaders connect failure detection, diagnosis confidence, remediation action, safety guardrails, and verification and escalation to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Model routing andfallback UnderAudit. Model routing and fallback Under Audithelps AI leaders connect routing… DESIGN SHIP OBSERVE REFINE MODEL
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Model routing and fallback Under Audit

Model routing and fallback Under Audit helps AI leaders connect routing, health, fallback, response normalisation, and routing to controlled model failover. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING A Buyer's Guideto Progressivedelivery. A Buyer's Guide to Progressive deliveryhelps VP Engineering / Head of… BUYERPROGRESSIVE DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to Progressive delivery

A Buyer's Guide to Progressive delivery helps VP Engineering / Head of Infrastructure leaders connect release cohorts, health signals, promotion policy, rollback, and experiment evidence to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Regression testingfor prompts UnderAudit. Regression testing for prompts UnderAudit helps teams connect evidence… ARCHITECTURE SECURITY RELIABILITY COST REGRESSIONTESTING
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Regression testing for prompts Under Audit

Regression testing for prompts 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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APPLIED AI A Buyer's Guide toConversation statemanagement. A Buyer's Guide to Conversation statemanagement helps engineering leaders… MODEL DEPLOY MONITOR ITERATE BUYER
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A Buyer's Guide to Conversation state management

A Buyer's Guide to Conversation state management helps engineering leaders connect resolved facts, transcript decay, correction handling, session boundaries, and handover to state that is extracted rather than replayed. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Data Quality SLAsfor Energy. Data Quality SLAs help energy teamsconnect freshness, completeness… ASSESS ADOPT OPTIMIZE GOVERN
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Data Quality SLAs for Energy

Data Quality SLAs help energy teams connect freshness, completeness, accuracy, ownership, breach response, and consumer expectations to the decisions the data actually drives. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI What Multi-agenthandoffs ActuallyCosts. What Multi-agent handoffs Actually Costsexplains the engineering, control… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights ·

What Multi-agent handoffs Actually Costs

What Multi-agent handoffs Actually Costs explains the engineering, control, change, and risk costs behind the first implementation over the operating life. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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