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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
APPLIED AI What Functioncalling reliabilityActually Costs. What Function calling reliabilityActually Costs shows the engineering… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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What Function calling reliability Actually Costs

What Function calling reliability Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price at enterprise scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY API Gateway Strategyin the Agent Era forFintech. Agent traffic breaks rate limits builtfor humans and stresses idempotency on… APIGATEWAY DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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API Gateway Strategy in the Agent Era for Fintech

Agent traffic breaks rate limits built for humans and stresses idempotency on payment APIs. Separate north-south, east-west, and agent paths, and make every retry safe.

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TECHNOLOGY Schema Evolutionfor Technology &SaaS. Schema Evolution helps SaaS data teamsconnect additive change, versioning… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 SCHEMA EVOLUTION
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Schema Evolution for Technology & SaaS

Schema Evolution helps SaaS data teams connect additive change, versioning, deprecation windows, consumer registries, contract testing, and rollout sequencing to the downstream systems a change can break. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI GOVERNANCE What IP provenancefor AI code ActuallyCosts. What IP provenance for AI code ActuallyCosts shows the engineering, control… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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What IP provenance for AI code Actually Costs

What IP provenance for AI code Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price across production AI. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Service Mesh in2026 for Fintech. Service Mesh helps fintech engineeringteams connect mutual authentication… 01 Scope 02 Build 03 Launch 04 Iterate
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Service Mesh in 2026 for Fintech

Service Mesh helps fintech engineering teams connect mutual authentication, segmentation evidence, policy enforcement, audit trails, and operational burden to controls that need demonstrating rather than asserting. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Retrieval-augmentedgeneration UnderAudit. Retrieval-augmented generation UnderAudit helps AI leaders connect sources… 01 Discover 02 Prototype 03 Harden 04 Roll out
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Retrieval-augmented generation Under Audit

Retrieval-augmented generation Under Audit helps AI leaders connect sources, permissions, freshness, retrieval, and citations to defensible grounded answers. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Structured outputenforcement UnderAudit. Structured output enforcement UnderAudit helps engineering leaders connect… MODEL DEPLOY MONITOR ITERATE STRUCTURED
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Structured output enforcement Under Audit

Structured output enforcement Under Audit helps engineering leaders connect schemas, decoding, validation, permissions, and replay to defensible automation. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY Terraform Modulesfor Technology &SaaS. A Terraform module is an API your wholeorg consumes. Design the interface for… PLAN BUILD MEASURE IMPROVE TERRAFORM
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Terraform Modules for Technology & SaaS

A Terraform module is an API your whole org consumes. Design the interface for the caller, version it properly, and stop exposing every provider argument as a variable.

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TECHNOLOGY Apache Icebergfor Energy. Iceberg suits energy because time-seriesdata gets corrected for years. Snapshots… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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Apache Iceberg for Energy

Iceberg suits energy because time-series data gets corrected for years. Snapshots and schema evolution matter more here than in most estates, and so does compaction.

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DATA ENGINEERING A Buyer's Guideto Change datacapture. A Buyer's Guide to Change data capturehelps CDO / VP Data leaders connect… PEOPLE PROCESS PLATFORM PRACTICE BUYERCHANGE
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A Buyer's Guide to Change data capture

A Buyer's Guide to Change data capture helps CDO / VP Data leaders connect source capture, event semantics, ordering and offsets, schema handling, and recovery and replay to reliable operating outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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TECHNOLOGY AI-Assisted SREfor Technology &SaaS. AI-Assisted SRE helps SaaS engineeringteams connect diagnostic automation… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 AI ASSISTED
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AI-Assisted SRE for Technology & SaaS

AI-Assisted SRE helps SaaS engineering teams connect diagnostic automation, context assembly, toil reduction, judgement boundaries, and on-call load to the reliability work that scales badly with team count. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI What Distillationfor cost reductionActually Costs. What Distillation for cost reductionActually Costs shows the engineering… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
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What Distillation for cost reduction Actually Costs

What Distillation for cost reduction Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING A Buyer's Guide toSecrets managementfor agents. A Buyer's Guide to Secrets managementfor agents helps CISO / VP Security… 01 Assess 02 Design 03 Ship 04 Operate
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A Buyer's Guide to Secrets management for agents

A Buyer's Guide to Secrets management for agents helps CISO / VP Security leaders connect workload identity, secret issuance, scope and policy, rotation and revocation, and audit evidence to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toHallucinationdetection. A Buyer's Guide to Hallucinationdetection helps CTO / Head of AI leaders… DISCOVERY DESIGN DELIVERY SCALE
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A Buyer's Guide to Hallucination detection

A Buyer's Guide to Hallucination detection helps CTO / Head of AI leaders connect claim segmentation, evidence availability, support checking, risk weighting, and response policy to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Function callingreliability UnderAudit. Function calling reliability Under Audithelps AI leaders connect function… DISCOVERY DESIGN DELIVERY SCALE
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Function calling reliability Under Audit

Function calling reliability Under Audit helps AI leaders connect function, input, missing-data, execution, and reliability to reliable function execution. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Multi-agenthandoffs UnderAudit. Multi-agent handoffs Under Audit helpsAI leaders connect handoff contract… PLAN BUILD MEASURE IMPROVE MULTI
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Multi-agent handoffs Under Audit

Multi-agent handoffs Under Audit helps AI leaders connect handoff contract, context, authority transfer, receipt, and handoff to traceable handoff continuity. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PLATFORM ENGINEERING Infrastructure ascode for ML UnderAudit. Infrastructure as code for ML UnderAudit helps VP Engineering / Head of… STRATEGY DELIVERY GOVERNANCE SCALE INFRASTRUCTURECODE
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Infrastructure as code for ML Under Audit

Infrastructure as code for ML 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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DATA ENGINEERING Streaming versusbatch pipelinesUnder Audit. Streaming versus batch pipelines UnderAudit helps CDO / VP Data leaders test… STREAMING/ BATCHPIPELINES Streaming Best fit for your caseSimpler to operateLower switching cost batch pipelines Added complexityHeavier toolingSteeper learning curve
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Streaming versus batch pipelines Under Audit

Streaming versus batch pipelines 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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APPLIED AI A Buyer's Guideto Promptversioning. A Buyer's Guide to Prompt versioninghelps engineering leaders connect paired… ASSESS ADOPT OPTIMIZE GOVERN
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A Buyer's Guide to Prompt versioning

A Buyer's Guide to Prompt versioning helps engineering leaders connect paired evaluations, rollback, environment parity, change attribution, and deployment coupling to prompts versioned with the tests that define them. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guideto Rerankingmodels. A Buyer's Guide to Reranking modelshelps engineering leaders connect… BUYERRERANKING DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to Reranking models

A Buyer's Guide to Reranking models helps engineering leaders connect upstream recall limits, candidate set size, latency cost, evaluation against the ceiling, and domain fit to reranking that cannot retrieve what retrieval missed. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI What AI featurediscoverabilityActually Costs. What AI feature discoverability ActuallyCosts shows the engineering, control… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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What AI feature discoverability Actually Costs

What AI feature discoverability Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price at enterprise scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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PRODUCT ENGINEERING A Buyer's Guideto Feature flagstrategy. A Buyer's Guide to Feature flag strategyhelps VP Engineering / Head of… 01 Discover 02 Prototype 03 Harden 04 Roll out
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A Buyer's Guide to Feature flag strategy

A Buyer's Guide to Feature flag strategy helps VP Engineering / Head of Infrastructure leaders connect flag taxonomy, targeting, ownership, lifecycle, and failure behaviour to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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AI GOVERNANCE What ExplainabilityrequirementsActually Costs. What Explainability requirementsActually Costs shows the engineering… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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What Explainability requirements Actually Costs

What Explainability requirements Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price at enterprise scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Hybrid search forretrieval UnderAudit. Hybrid search for retrieval Under Audithelps AI leaders connect lexical… ASSESS ADOPT OPTIMIZE GOVERN
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Hybrid search for retrieval Under Audit

Hybrid search for retrieval Under Audit helps AI leaders connect lexical, semantic, filter, fusion, and retrieval evidence to defensible retrieval coverage. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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