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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.

36 essays
APPLIED AI A Buyer's Guide toHuman-in-the-loopapproval gates. A Buyer's Guide to Human-in-the-loopapproval gates helps engineering leaders… DESIGN SHIP OBSERVE REFINE BUYER
Insights ·

A Buyer's Guide to Human-in-the-loop approval gates

A Buyer's Guide to Human-in-the-loop approval gates helps engineering leaders connect rejection rate, reviewer basis, gate placement, throughput, and decay to gates that catch things rather than rubber-stamp them. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toAI featurediscoverability. A Buyer's Guide to AI featurediscoverability helps product and… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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A Buyer's Guide to AI feature discoverability

A Buyer's Guide to AI feature discoverability helps product and engineering leaders connect capability affordances, entry points, expectation setting, failure visibility, and progressive disclosure to features users can find and learn. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toAgent refusalbehaviour. A Buyer's Guide to Agent refusalbehaviour helps engineering leaders… BUYERAGENT DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
Insights ·

A Buyer's Guide to Agent refusal behaviour

A Buyer's Guide to Agent refusal behaviour helps engineering leaders connect over-refusal cost, refusal quality, measurement in both directions, alternative offering, and domain tuning to refusals that do not block legitimate work. 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
Insights ·

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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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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APPLIED AI A Buyer's Guide toConversation statemanagement. A Buyer's Guide to Conversation statemanagement helps engineering leaders… MODEL DEPLOY MONITOR ITERATE BUYER
Insights ·

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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APPLIED AI A Buyer's Guide toSpeech interfaces inproduction. A Buyer's Guide to Speech interfaces inproduction helps engineering leaders… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 BUYER SPEECH
Insights ·

A Buyer's Guide to Speech interfaces in production

A Buyer's Guide to Speech interfaces in production helps engineering leaders connect latency, turn-taking, recognition, recovery, and controls to voice AI. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Agent escalationpaths Under Audit. A Buyer's Guide to Agent escalationpaths Under Audit helps CTO / CISO… 01 Assess 02 Design 03 Ship 04 Operate
Insights ·

Agent escalation paths Under Audit

A Buyer's Guide to Agent escalation paths Under Audit helps CTO / CISO evaluate risk thresholds, escalation triggers, human context, timeout behaviour, audit trails. Learn the controls, buying criteria, implementation approach, pitfalls, and production signals.

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APPLIED AI A Buyer's Guideto Edge inference. A Buyer's Guide to Edge inference helpsVP Engineering / Head of Infrastructure… DISCOVERY DESIGN DELIVERY SCALE
Insights ·

A Buyer's Guide to Edge inference

A Buyer's Guide to Edge inference helps VP Engineering / Head of Infrastructure leaders connect workload fit, device runtime, model packaging, fleet management, and telemetry and fallback to reliable operating outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toAgent statepersistence. A Buyer's Guide to Agent statepersistence helps engineering leaders… BUYERAGENT DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights ·

A Buyer's Guide to Agent state persistence

A Buyer's Guide to Agent state persistence helps engineering leaders connect side-effect records, safe resumption, checkpoint granularity, external state divergence, and expiry to durability that makes resuming safe. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guideto Agent memorydesign. A Buyer's Guide to Agent memory designhelps engineering leaders connect expiry… STRATEGY DELIVERY GOVERNANCE SCALE BUYER AGENT
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A Buyer's Guide to Agent memory design

A Buyer's Guide to Agent memory design helps engineering leaders connect expiry rules, staleness, correction, scope boundaries, and privacy obligations to memory defined by what it forgets. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Agent permissionscoping UnderAudit. A Buyer's Guide to Agent permissionscoping Under Audit helps CISO / CTO… AGENTPERMISSION DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
Insights ·

Agent permission scoping Under Audit

A Buyer's Guide to Agent permission scoping Under Audit helps CISO / CTO evaluate identity, least privilege, tool scope, approval controls, permission review. Learn the controls, buying criteria, implementation approach, pitfalls, and production signals.

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APPLIED AI A Buyer's Guide toHybrid search forretrieval. A Buyer's Guide to Hybrid search forretrieval helps engineering leaders… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

A Buyer's Guide to Hybrid search for retrieval

A Buyer's Guide to Hybrid search for retrieval helps engineering leaders connect query-dependent fusion, exact-match needs, weighting, evaluation by query type, and tuning to hybrid that does not average away both strengths. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toLong-running agentworkflows. A Buyer's Guide to Long-running agentworkflows helps engineering leaders… MODEL DEPLOY MONITOR ITERATE BUYER
Insights ·

A Buyer's Guide to Long-running agent workflows

A Buyer's Guide to Long-running agent workflows helps engineering leaders connect version skew, deployment during runs, external deadlines, human wait states, and abandonment to workflows that outlive the code that started them. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toCopilot interactiondesign. A Buyer's Guide to Copilot interactiondesign helps product and engineering… PEOPLE PROCESS PLATFORM PRACTICE BUYERCOPILOT
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A Buyer's Guide to Copilot interaction design

A Buyer's Guide to Copilot interaction design helps product and engineering leaders connect rejection cost, suggestion timing, edit affordances, undo, and trust calibration to copilots people keep using. 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
Insights ·

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 A Buyer's Guideto Chunkingstrategy. A Buyer's Guide to Chunking strategyhelps engineering leaders connect… DESIGN SHIP OBSERVE REFINE BUYER
Insights ·

A Buyer's Guide to Chunking strategy

A Buyer's Guide to Chunking strategy helps engineering leaders connect severed qualifiers, answer-level evaluation, structural boundaries, overlap, and metadata to chunking measured on answers rather than retrieval scores. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI AI agentorchestrationUnder Audit. A Buyer's Guide to AI agentorchestration Under Audit helps CTO / VP… PLAN BUILD MEASURE IMPROVE AI
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AI agent orchestration Under Audit

A Buyer's Guide to AI agent orchestration Under Audit helps CTO / VP Engineering evaluate agent identity, workflow state, tool calls, policy enforcement, traceability. Learn the controls, buying criteria, implementation approach, pitfalls, and production signals.

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APPLIED AI A Buyer's Guide toAgent-to-agentprotocols. A Buyer's Guide to Agent-to-agentprotocols helps engineering leaders… 01 Assess 02 Design 03 Ship 04 Operate
Insights ·

A Buyer's Guide to Agent-to-agent protocols

A Buyer's Guide to Agent-to-agent protocols helps engineering leaders connect delegated authority, provenance, trust boundaries, message semantics, and accountability to interoperability that carries permission as well as content. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toAgent permissionscoping. A Buyer's Guide to Agent permissionscoping helps security leaders connect… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

A Buyer's Guide to Agent permission scoping

A Buyer's Guide to Agent permission scoping helps security leaders connect per-task credentials, delegated user authority, short-lived tokens, standing access, and privilege review to permissions scoped to the job rather than the agent. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI A Buyer's Guide toRetrieval-augmentedgeneration. A Buyer's Guide to Retrieval-augmentedgeneration helps CTO leaders connect… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights ·

A Buyer's Guide to Retrieval-augmented generation

A Buyer's Guide to Retrieval-augmented generation helps CTO leaders connect retrieval, indexing, reranking, evaluation, and governance to answer quality. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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APPLIED AI Agent memorydesign UnderAudit. A Buyer's Guide to Agent memory designUnder Audit helps CTO / CISO evaluate… AGENTMEMORY DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights ·

Agent memory design Under Audit

A Buyer's Guide to Agent memory design Under Audit helps CTO / CISO evaluate memory scope, provenance, retention, access control, correction workflows. Learn the controls, buying criteria, implementation approach, pitfalls, and production signals.

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