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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.

45 essays
PRODUCT ENGINEERING What Monolith toModular ArchitectureActually Costs. Monolith to modular architecture carriesengineering, control, operating, change… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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What Monolith to Modular Architecture Actually Costs

Monolith to modular architecture carries engineering, control, operating, change, recovery, and exit costs that enterprise teams must model before scaling. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING Idempotency andRetries UnderAudit. Idempotency and retries Under Audithelps VP Engineering / Head of… ARCHITECTURE SECURITY RELIABILITY COST IDEMPOTENCYRETRIES
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Idempotency and Retries Under Audit

Idempotency and retries 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.

17 min read↗
PRODUCT ENGINEERING A Buyer'S Guideto API-firstDesign. A Buyer's Guide to API-first designhelps VP Engineering / Head of… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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A Buyer'S Guide to API-first Design

A Buyer's Guide to API-first design helps VP Engineering / Head of Infrastructure leaders connect consumer use cases, contract design, versioning, error semantics, and governance and testing to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toTechnical DebtPortfolios. A Buyer's Guide to Technical debtportfolios helps CTO / Head of AI… 01 Pilot 02 Team 03 Org 04 Scale BUYER TECHNICAL
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A Buyer'S Guide to Technical Debt Portfolios

A Buyer's Guide to Technical debt portfolios helps CTO / Head of AI leaders connect debt inventory, business impact, risk scoring, remediation options, and portfolio governance to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING What Feature FlagStrategy ActuallyCosts. Feature flag strategy carriesengineering, control, operating, change… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

What Feature Flag Strategy Actually Costs

Feature flag strategy carries engineering, control, operating, change, recovery, and exit costs that enterprise teams must model before scaling in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING Event-DrivenArchitectureUnder Audit. Event-driven architecture Under Audithelps VP Engineering / Head of… EVENTDRIVEN DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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Event-Driven Architecture Under Audit

Event-driven architecture 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.

17 min read↗
PRODUCT ENGINEERING AI FeatureScoping UnderAudit. AI feature scoping Under Audit helps CTO/ VP Product leaders test controls… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
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AI Feature Scoping Under Audit

AI feature scoping Under Audit helps CTO / VP Product leaders test controls, evidence, ownership, failure handling, and recovery. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING What Event-DrivenArchitectureActually Costs. The cost of event-driven architectureincludes engineering, controls… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights ·

What Event-Driven Architecture Actually Costs

The cost of event-driven architecture includes engineering, controls, operations, change, recovery, and exit work that enterprise teams must keep funding. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING What Strangler-FigMigration ActuallyCosts. The cost of strangler-fig migrationincludes engineering, controls… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

What Strangler-Fig Migration Actually Costs

The cost of strangler-fig migration includes engineering, controls, operations, change, recovery, and exit work that enterprise teams must keep funding. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toIdempotency andRetries. A Buyer's Guide to Idempotency andretries helps VP Engineering / Head of… PEOPLE PROCESS PLATFORM PRACTICE BUYERIDEMPOTENCY
Insights ·

A Buyer'S Guide to Idempotency and Retries

A Buyer's Guide to Idempotency and retries helps VP Engineering / Head of Infrastructure leaders connect operation identity, idempotency key, retry policy, side-effect boundary, and deduplication evidence to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toTechnical DueDiligence. A Buyer's Guide to Technical duediligence helps CTO / Head of AI leaders… DESIGN SHIP OBSERVE REFINE BUYER
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A Buyer'S Guide to Technical Due Diligence

A Buyer's Guide to Technical due diligence helps CTO / Head of AI leaders connect decision questions, architecture risk, delivery evidence, security and operations, and remediation economics to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING What API-firstDesign ActuallyCosts. API-first design carries engineering,control, operating, change, recovery… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights ·

What API-first Design Actually Costs

API-first design carries engineering, control, operating, change, recovery, and exit costs that enterprise teams must model before scaling in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING Engineering TeamTopologies UnderAudit. Engineering team topologies Under Audithelps CTO / VP Engineering leaders test… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

Engineering Team Topologies Under Audit

Engineering team topologies 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.

17 min read↗
PRODUCT ENGINEERING What EngineeringTeam TopologiesActually Costs. The cost of engineering team topologiesincludes engineering, controls… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights ·

What Engineering Team Topologies Actually Costs

The cost of engineering team topologies includes engineering, controls, operations, change, recovery, and exit work that enterprise teams must keep funding. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toBuild Versus BuyDecisions. A Buyer's Guide to Build versus buydecisions helps CTO / Head of AI leaders… A BUYER'S/ BUYDECISIONS A Buyer'S Best fit for your caseSimpler to operateLower switching cost Buy Decisions Added complexityHeavier toolingSteeper learning curve
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A Buyer'S Guide to Build Versus Buy Decisions

A Buyer's Guide to Build versus buy decisions helps CTO / Head of AI leaders connect strategic control, integration depth, operating burden, switching cost, and time-to-value to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING Strangler-FigMigration UnderAudit. Strangler-fig migration Under Audithelps CTO / VP Engineering leaders test… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights ·

Strangler-Fig Migration Under Audit

Strangler-fig migration 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.

17 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toEngineering TeamTopologies. A Buyer's Guide to Engineering teamtopologies helps VP Engineering / Head… 01 Ad hoc 02 Managed 03 Defined 04 Optimized BUYER ENGINEERING
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A Buyer'S Guide to Engineering Team Topologies

A Buyer's Guide to Engineering team topologies helps VP Engineering / Head of Infrastructure leaders connect value streams, cognitive load, platform boundaries, interaction modes, and ownership evolution to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
PRODUCT ENGINEERING API-first DesignUnder Audit. API-first design Under Audit helps VPEngineering / Head of Infrastructure… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
Insights ·

API-first Design Under Audit

API-first design 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.

17 min read↗
PRODUCT ENGINEERING What DiscoverySprints ActuallyCosts. Discovery sprints carries engineering,control, operating, change, recovery… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

What Discovery Sprints Actually Costs

Discovery sprints carries engineering, control, operating, change, recovery, and exit costs that enterprise teams must model before scaling in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toOnboarding EngineersOnto AI Systems. A Buyer's Guide to Onboarding engineersonto AI systems helps CTO / Head of AI… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
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A Buyer'S Guide to Onboarding Engineers Onto AI Systems

A Buyer's Guide to Onboarding engineers onto AI systems helps CTO / Head of AI leaders connect system map, decision trace, local environment, evaluation workflow, and operational history to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
PRODUCT ENGINEERING A Buyer'S Guide toEvent-DrivenArchitecture. A Buyer's Guide to Event-drivenarchitecture helps VP Engineering / Head… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
Insights ·

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.

16 min read↗
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