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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.

1314 essays
TECHNOLOGY QA Metrics:Measuring Quality,Not Busyness. Most QA metrics measure activity, notquality. How to pick metrics that… 01 Ad hoc 02 Managed 03 Defined 04 Optimized QA METRICS
Insights · Jul 15, 2026

QA Metrics: Measuring Quality, Not Busyness

Most QA metrics measure activity, not quality. How to pick metrics that predict escaped defects, like defect escape rate and coverage of risk, instead of test counts and cases run.

12 min read
TECHNOLOGY TestOps: TheOperating Model forContinuous Quality. TestOps runs quality like an operationsdiscipline: test infrastructure, data… PLAN BUILD MEASURE IMPROVE TESTOPS
Insights · Jul 15, 2026

TestOps: The Operating Model for Continuous Quality

TestOps runs quality like an operations discipline: test infrastructure, data, environments, and flakiness managed as a system, so tests stay fast, reliable, and trusted at scale.

12 min read
TECHNOLOGY Shift-Right Testing:Production Signalsas Test Oracle. Shift-right testing uses real productionsignals to catch what pre-release… SHIFTRIGHT DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights · Jul 15, 2026

Shift-Right Testing: Production Signals as Test Oracle

Shift-right testing uses real production signals to catch what pre-release testing cannot, without gambling in production. How to test in prod safely with observability and guardrails.

12 min read
TECHNOLOGY Shift-Left Testing:Gates That HelpInstead of Block. Shift-left testing moves qualityearlier, but only works if the gates… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights · Jul 15, 2026

Shift-Left Testing: Gates That Help Instead of Block

Shift-left testing moves quality earlier, but only works if the gates help developers instead of blocking them. How to design fast, trusted gates engineers do not resent.

12 min read
TECHNOLOGY The Test Pyramid in2026: What AIChanged. The test pyramid still holds, but AIchanged the economics of each layer… 01 Pilot 02 Team 03 Org 04 Scale TEST PYRAMID
Insights · Jul 15, 2026

The Test Pyramid in 2026: What AI Changed

The test pyramid still holds, but AI changed the economics of each layer. What generation, agents, and cheap tests mean for how you balance unit, integration, and end-to-end.

13 min read
TECHNOLOGY Risk-Based Testing:Quality Budgets forGrown-Ups. Risk-based testing spends your limitedquality budget where failure costs most… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights · Jul 15, 2026

Risk-Based Testing: Quality Budgets for Grown-Ups

Risk-based testing spends your limited quality budget where failure costs most. How to weigh impact and likelihood so testing effort follows risk instead of habit.

12 min read
TECHNOLOGY Mutation Testing:Testing YourTests. Mutation testing checks whether yourtests actually catch bugs by introducing… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights · Jul 15, 2026

Mutation Testing: Testing Your Tests

Mutation testing checks whether your tests actually catch bugs by introducing deliberate faults and seeing if tests fail. How it exposes weak tests coverage never could.

12 min read
TECHNOLOGY Self-Healing Tests:The End of SelectorHell. Self-healing tests repair brokenselectors when the UI changes, killing… PLAN BUILD MEASURE IMPROVE SELF
Insights · Jul 15, 2026

Self-Healing Tests: The End of Selector Hell

Self-healing tests repair broken selectors when the UI changes, killing the maintenance that makes UI tests hateful, as long as healing does not quietly mask real bugs.

12 min read
TECHNOLOGY AI Test Generation:Real Coverage orConfident Noise?. AI can generate tests fast, but coverageis not the same as protection. How to… PEOPLE PROCESS PLATFORM PRACTICE AI TEST
Insights · Jul 15, 2026

AI Test Generation: Real Coverage or Confident Noise?

AI can generate tests fast, but coverage is not the same as protection. How to tell real coverage from confident noise by judging assertion quality, not test count.

13 min read
TECHNOLOGY Autonomous Testing: AMaturity Model FromScripts to Agents. A maturity model for autonomous testing,from scripted automation to self-healing… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · Jul 15, 2026

Autonomous Testing: A Maturity Model From Scripts to Agents

A maturity model for autonomous testing, from scripted automation to self-healing to AI-generated to fully agentic, with the guardrails each level needs in a production team.

12 min read
TECHNOLOGY Agentic Testing:When the Test SuiteThinks for Itself. Agentic testing explained: AI agentsthat decide what to test, explore the… MODEL DEPLOY MONITOR ITERATE AGENTIC
Insights · Jul 15, 2026

Agentic Testing: When the Test Suite Thinks for Itself

Agentic testing explained: AI agents that decide what to test, explore the app, and judge results, plus the oracle problem, guardrails, and human oversight it needs.

13 min read
TECHNOLOGY From QA to QualityEngineering: TheAI-Era Shift. QA as a manual gate at the end is over.Quality engineering builds quality into… MODEL DEPLOY MONITOR ITERATE QA
Insights · Jul 15, 2026

From QA to Quality Engineering: The AI-Era Shift

QA as a manual gate at the end is over. Quality engineering builds quality into the whole delivery process, a shift AI accelerated. What changes and why it sticks.

13 min read
TECHNOLOGY AI Coding Assistants inthe Enterprise: ARollout Playbook. A rollout playbook for AI codingassistants in the enterprise: policy… AI CODING DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights · Jul 15, 2026

AI Coding Assistants in the Enterprise: A Rollout Playbook

A rollout playbook for AI coding assistants in the enterprise: policy, licensing, security and IP, enablement, and measurement, so adoption is deliberate rather than accidental.

13 min read
TECHNOLOGY Micro-Frontends: TheHonest Trade-OffAnalysis. When team scale justifies the complexitytax of micro-frontends, and when it does… ARCHITECTURE SECURITY RELIABILITY COST MICROFRONTENDS
Insights · Jul 15, 2026

Micro-Frontends: The Honest Trade-Off Analysis

When team scale justifies the complexity tax of micro-frontends, and when it does not. An honest look at what you gain, what you pay, and how to decide.

12 min read
TECHNOLOGY SaaS Scalability: WhatBreaks First and What toFix in Order. Scaling a SaaS product past its firstarchitecture, in the order that actually… SAASSCALABILITY DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights · Jul 15, 2026

SaaS Scalability: What Breaks First and What to Fix in Order

Scaling a SaaS product past its first architecture, in the order that actually works. What breaks first, why the database usually goes before the app, and how to fix it in sequence.

13 min read
TECHNOLOGY The AI ProductDevelopment Process:What Changes for PMs andEngineers. Shipping AI features changes how PMs andengineers work: feasibility that is… PEOPLE PROCESS PLATFORM PRACTICE AI PRODUCT
Insights · Jul 15, 2026

The AI Product Development Process: What Changes for PMs and Engineers

Shipping AI features changes how PMs and engineers work: feasibility that is probabilistic, evaluation instead of pass or fail, and iteration on behavior. The process changes that stick.

13 min read
TECHNOLOGY Product AnalyticsImplementation: FromEvents to Decisions. How to implement product analytics yourteam actually trusts: a tracking plan… PRODUCTANALYTICS DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
Insights · Jul 15, 2026

Product Analytics Implementation: From Events to Decisions

How to implement product analytics your team actually trusts: a tracking plan, clean event data, and the governance that turns events into decisions instead of dashboards nobody believes.

12 min read
TECHNOLOGY WCAG Compliance:Building AccessibilityIn, Not Bolting It On. Accessibility as an engineeringdiscipline: how to meet WCAG by building… WCAGCOMPLIANCE DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
Insights · Jul 15, 2026

WCAG Compliance: Building Accessibility In, Not Bolting It On

Accessibility as an engineering discipline: how to meet WCAG by building it in from the start instead of a costly retrofit, with testing and culture that keep it.

12 min read
TECHNOLOGY Frontend Performance:The Conversion LeverEngineering Owns. Frontend performance is a revenue lever,not a nicety. How to set performance… STRATEGY DELIVERY GOVERNANCE SCALE FRONTENDPERFORMANCE
Insights · Jul 15, 2026

Frontend Performance: The Conversion Lever Engineering Owns

Frontend performance is a revenue lever, not a nicety. How to set performance budgets, monitor real users, and build a culture that keeps the frontend fast.

12 min read
TECHNOLOGY Design Systems at Scale:Governance That Doesn'tChoke Speed. How to run a design system as productinfrastructure across brands and teams… 01 Ad hoc 02 Managed 03 Defined 04 Optimized DESIGN SYSTEMS
Insights · Jul 15, 2026

Design Systems at Scale: Governance That Doesn't Choke Speed

How to run a design system as product infrastructure across brands and teams, with governance that keeps consistency without becoming a bottleneck that slows every team.

12 min read
TECHNOLOGY Product Discovery:Killing Bad IdeasCheaply. Product discovery for technical productsmeans gathering evidence before the… DESIGN SHIP OBSERVE REFINE PRODUCT
Insights · Jul 15, 2026

Product Discovery: Killing Bad Ideas Cheaply

Product discovery for technical products means gathering evidence before the roadmap and killing bad ideas cheaply, so engineering builds what is validated, not what is assumed.

12 min read
TECHNOLOGY SoftwareArchitectureReviews: What GoodLooks Like. What a serious architecture reviewcovers before you scale: scope… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 SOFTWARE ARCHITECTURE
Insights · Jul 15, 2026

Software Architecture Reviews: What Good Looks Like

What a serious architecture review covers before you scale: scope, scalability, failure modes, security, and decisions recorded, so problems surface on paper not in production.

12 min read
TECHNOLOGY The Quality Profileof AI-GeneratedCode: What to Watch. AI-generated code fails differently thanhuman code. The defect patterns to… QUALITYPROFILE DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights · Jul 14, 2026

The Quality Profile of AI-Generated Code: What to Watch

AI-generated code fails differently than human code. The defect patterns to watch, the review heuristics that catch them, and how to audit AI output at scale.

12 min read
TECHNOLOGY DeveloperProductivity MetricsWhen AI Writes theCode. When AI writes much of the code, outputstops signaling productivity. How to… PEOPLE PROCESS PLATFORM PRACTICE DEVELOPERPRODUCTIVITY
Insights · Jul 14, 2026

Developer Productivity Metrics When AI Writes the Code

When AI writes much of the code, output stops signaling productivity. How to measure developer productivity by outcomes, flow, quality, and experience instead.

12 min read
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