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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.

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Field notes, sorted by recency.

1314 essays
TECHNOLOGY RAG on AWS: A ProductionArchitecture from Ingestto Response. Production-grade RAG on AWS has fivestages from ingest to response. Each… MODEL DEPLOY MONITOR ITERATE RAG
Insights · May 19, 2026

RAG on AWS: A Production Architecture from Ingest to Response

Production-grade RAG on AWS has five stages from ingest to response. Each stage has AWS-native services that fit and ones that do not. Here is the reference architecture with the specific service…

7 min read
TECHNOLOGY AWS FinOps: Buildinga Continuous CostOptimization Loop. One-time AWS cost audits produceone-time savings. Continuous FinOps… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights · May 19, 2026

AWS FinOps: Building a Continuous Cost Optimization Loop

One-time AWS cost audits produce one-time savings. Continuous FinOps loops produce sustained reduction. A weekly cycle with five steps converts one-time savings into compound improvement. Here is…

7 min read
TECHNOLOGY Step Functions forAgentic AI Workflowson AWS. AWS Step Functions is one of the betterorchestration choices for agentic AI… MODEL DEPLOY MONITOR ITERATE STEP
Insights · May 19, 2026

Step Functions for Agentic AI Workflows on AWS

AWS Step Functions is one of the better orchestration choices for agentic AI workloads, and not the right choice for some others. Three patterns describe when it fits. Here is the operating reference.

6 min read
TECHNOLOGY Data Architecture forAI: What Your StackNeeds Before You AddLLMs. Most AI implementation problems trace todata infrastructure that was not ready… STRATEGY DELIVERY GOVERNANCE SCALE DATAARCHITECTURE
Insights · May 19, 2026

Data Architecture for AI: What Your Stack Needs Before You Add LLMs

Most AI implementation problems trace to data infrastructure that was not ready when AI was added. Five readiness conditions determine whether your stack can support LLMs. Check them before adding…

7 min read
TECHNOLOGY What Is Data Engineeringin 2026? A ModernDefinition forEnterprise Leaders. Learn what Data Engineering means in2026: pipelines, contracts… DATAENGINEERING DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights · May 19, 2026

What Is Data Engineering in 2026? A Modern Definition for Enterprise Leaders

Learn what Data Engineering means in 2026: pipelines, contracts, observability, and the operating model behind every modern data platform.

11 min read
TECHNOLOGY MicroservicesArchitecture: When ItHelps and When It Hurts. Amazon Prime Video cut 90% offinfrastructure cost going from… DISCOVERY DESIGN DELIVERY SCALE
Insights · May 19, 2026

Microservices Architecture: When It Helps and When It Hurts

Amazon Prime Video cut 90% off infrastructure cost going from microservices back to a monolith. 42% of orgs are doing similar. Here's the decision framework.

5 min read
TECHNOLOGY Engineering CultureBreaks the AI-FirstOrg. AI adoption hit 90% of engineeringteams. But senior engineers see 5x the… DESIGN SHIP OBSERVE REFINE ENGINEERI…
Insights · May 19, 2026

Engineering Culture Breaks the AI-First Org

AI adoption hit 90% of engineering teams. But senior engineers see 5x the productivity gain juniors do. The culture gap is now the biggest org problem CTOs face.

6 min read
TECHNOLOGY AI Audit: DetectingIssues Before VCs FindThem in Due Diligence. 75% of VC deal reviews are nowAI-informed. By the time investors find… 01 Ad hoc 02 Managed 03 Defined 04 Optimized AI AUDIT
Insights · May 19, 2026

AI Audit: Detecting Issues Before VCs Find Them in Due Diligence

75% of VC deal reviews are now AI-informed. By the time investors find your AI issues in due diligence, it's too late to fix the cap table consequences. Here's the audit you run first.

7 min read
TECHNOLOGY AI Cost per Request: AFinOps Framework forEnterprise AI. AI inference spend hit $37B in 2025, up3.2x in a year. The CFO is about to ask… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · May 19, 2026

AI Cost per Request: A FinOps Framework for Enterprise AI

AI inference spend hit $37B in 2025, up 3.2x in a year. The CFO is about to ask why. Here's the per-request framework that produces the answer they want.

7 min read
TECHNOLOGY The VC InterviewChecklist: TechnicalQuestions to AnswerBefore the Meeting. 75% of VC deals are AI-informed. 90% ofVCs use AI tools to screen. Here are the… MODEL DEPLOY MONITOR ITERATE VC
Insights · May 19, 2026

The VC Interview Checklist: Technical Questions to Answer Before the Meeting

75% of VC deals are AI-informed. 90% of VCs use AI tools to screen. Here are the 12 technical questions you'll be asked, with the answers that close faster valuations.

7 min read
TECHNOLOGY Continuous Intelligenceand SoftwareReliability: The 67%Silent Failure Problem. MIT found 91% of production AI modelsdrift within a year. 67% fail silently… 4minutes CONTINUOUS INTELLIGEN… People
Insights · May 19, 2026

Continuous Intelligence and Software Reliability: The 67% Silent Failure Problem

MIT found 91% of production AI models drift within a year. 67% fail silently. AWS DevOps Agent now detects regressions in 4 minutes. Here is what reliability means when your software thinks.

7 min read
TECHNOLOGY The New SDLC: AIAgents Build Halfthe Code. GitHub research shows AI now writes 46percent of code in adopted teams. The… DESIGN SHIP OBSERVE REFINE NEW
Insights · May 19, 2026

The New SDLC: AI Agents Build Half the Code

GitHub research shows AI now writes 46 percent of code in adopted teams. The SDLC has reshaped around review, evals, and the 11-week ramp. Here is the new shape and what breaks if you ignore it.

7 min read
TECHNOLOGY AI FinOps: CloudCost Optimizationfor the InferenceEra. GenAI spend hit $37B globally in 2024and inference now dominates AI cost… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights · May 19, 2026

AI FinOps: Cloud Cost Optimization for the Inference Era

GenAI spend hit $37B globally in 2024 and inference now dominates AI cost lines. Five FinOps levers that actually cut the bill: caching, tier routing, batch shifting, prompt economics, and…

7 min read
TECHNOLOGY Modern DevOps MetricsBeyond DORA: What EliteEngineering Teams Trackin 2026. DORA dropped the elite/high/medium/lowbuckets in 2025. Top teams now track… DISCOVERY DESIGN DELIVERY SCALE
Insights · May 19, 2026

Modern DevOps Metrics Beyond DORA: What Elite Engineering Teams Track in 2026

DORA dropped the elite/high/medium/low buckets in 2025. Top teams now track AI-attribution metrics, developer experience, and business outcome alignment alongside DORA. Here's the new picture.

5 min read
TECHNOLOGY Legacy System Risk inSoftware Delivery: The280,000-Hour Problem. Morgan Stanley logged 280,000 developerhours on legacy migration before AI cut… DESIGN SHIP OBSERVE REFINE LEGACY
Insights · May 19, 2026

Legacy System Risk in Software Delivery: The 280,000-Hour Problem

Morgan Stanley logged 280,000 developer hours on legacy migration before AI cut it in half. Here is what legacy risk actually costs a CTO in 2026 and how to price it.

8 min read
TECHNOLOGY SaaS TCO: Risk,Velocity, and AIEconomics. Public SaaS gross margins dropped to60-70%. 84% of companies see 6%+ margin… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights · May 19, 2026

SaaS TCO: Risk, Velocity, and AI Economics

Public SaaS gross margins dropped to 60-70%. 84% of companies see 6%+ margin erosion from AI costs. Replit's gross margin went negative before recovering. Here's the new math.

5 min read
TECHNOLOGY AI DevelopmentServices: Realvs. Hype. GitHub Copilot generates 46% of code.Productivity gains take 11 weeks to… AIDEVELOPMENT/ HYPE AI Development Best fit for your caseSimpler to operateLower switching cost Hype Added complexityHeavier toolingSteeper learning curve
Insights · May 19, 2026

AI Development Services: Real vs. Hype

GitHub Copilot generates 46% of code. Productivity gains take 11 weeks to materialize. 29% of generated Python has security issues. The honest math behind the AI dev hype.

7 min read
TECHNOLOGY Human-in-the-LoopArchitectures forEnterprise Agentic AI. Most HITL deployments burn out reviewersin 90 days. The architectures that don't… MODEL DEPLOY MONITOR ITERATE HUMAN
Insights · May 18, 2026

Human-in-the-Loop Architectures for Enterprise Agentic AI

Most HITL deployments burn out reviewers in 90 days. The architectures that don't are designed around attention budgets, not engineering convenience. Here's the pattern.

9 min read
TECHNOLOGY Building a Data PlatformThat AI Teams ActuallyWant to Use. Wakefield Research found 71% of AIengineers say their data platform slows… BUILDINGDATA DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
Insights · May 18, 2026

Building a Data Platform That AI Teams Actually Want to Use

Wakefield Research found 71% of AI engineers say their data platform slows them down. The gap is in self-service. Here are the four friction points that determine whether AI teams use your…

7 min read
TECHNOLOGY How to Evaluate an AIImplementation Partner:A CTO's Field Guide (NotProcurement's). BCG found 74% of AI investments don'tproduce tangible value. Most of that… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · May 18, 2026

How to Evaluate an AI Implementation Partner: A CTO's Field Guide (Not Procurement's)

BCG found 74% of AI investments don't produce tangible value. Most of that loss is paid to the wrong partner. Here's how to test which kind you're hiring.

11 min read
TECHNOLOGY LLM Ops for CTOs:What Your Team NeedsBeyond the Model. Your team can deploy an LLM in a week.Operating one for two years is a… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · May 18, 2026

LLM Ops for CTOs: What Your Team Needs Beyond the Model

Your team can deploy an LLM in a week. Operating one for two years is a different discipline. Here's what CTOs need to build beyond the model.

9 min read
TECHNOLOGY AI in Real Estate:Beyond Valuation - Ops,Leasing, and Maintenance. Learn AI in Real Estate beyond valuationin 2026: ops, leasing, maintenance use… 01 Discover 02 Prototype 03 Harden 04 Roll out
Insights · May 15, 2026

AI in Real Estate: Beyond Valuation - Ops, Leasing, and Maintenance

Learn AI in Real Estate beyond valuation in 2026: ops, leasing, maintenance use cases and the operating model behind production AI in property tech.

12 min read
TECHNOLOGY AI in Real Estate:Beyond Valuation - Ops,Leasing, and Maintenance. Learn AI in Real Estate beyond valuationin 2026: ops, leasing, maintenance use… 01 Scope 02 Build 03 Launch 04 Iterate
Insights · May 15, 2026

AI in Real Estate: Beyond Valuation - Ops, Leasing, and Maintenance

Learn AI in Real Estate beyond valuation in 2026: ops, leasing, maintenance use cases and the operating model behind production AI in property tech.

12 min read
TECHNOLOGY AI Cost Optimization inHealthcare: Model andInfra Levers. Learn AI Cost Optimization in Healthcarein 2026: model and infrastructure… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · May 15, 2026

AI Cost Optimization in Healthcare: Model and Infra Levers

Learn AI Cost Optimization in Healthcare in 2026: model and infrastructure levers, cost shape, and the operating cadence behind sustained savings.

13 min read
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