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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.

1395 essays
TECHNOLOGY GraphQL vs RESTfor Retail. A product page, a mobile app, and apartner feed each want different data… GRAPHQL /REST GraphQL Best fit for your caseSimpler to operateLower switching cost REST Added complexityHeavier toolingSteeper learning curve
Insights · Jul 23, 2026

GraphQL vs REST for Retail

A product page, a mobile app, and a partner feed each want different data from your commerce API. GraphQL, REST, and RPC fit different retail consumers. How to choose by who calls, not by hype.

16 min read
TECHNOLOGY GraphQL vs RESTfor Technology &SaaS. GraphQL, REST, and RPC each fitdifferent consumers. Picking by fashion… GRAPHQL /REST GraphQL Best fit for your caseSimpler to operateLower switching cost REST Added complexityHeavier toolingSteeper learning curve
Insights · Jul 23, 2026

GraphQL vs REST for Technology & SaaS

GraphQL, REST, and RPC each fit different consumers. Picking by fashion instead of by who calls your API is how SaaS teams end up with the wrong one. How to choose by consumer, not hype.

15 min read
TECHNOLOGY API VersioningStrategies That AgeWell for Fintech. In fintech, an API change can break apartner's payment flow or a regulator's… 01 Scope 02 Build 03 Launch 04 Iterate
Insights · Jul 23, 2026

API Versioning Strategies That Age Well for Fintech

In fintech, an API change can break a partner's payment flow or a regulator's reporting feed. Versioning that ages well lets your API evolve without breaking money movement, integrations, or…

16 min read
TECHNOLOGY API VersioningStrategies That Age Wellfor Technology & SaaS. Every API change risks breaking acustomer's integration. Good versioning… 01 Discover 02 Prototype 03 Harden 04 Roll out
Insights · Jul 23, 2026

API Versioning Strategies That Age Well for Technology & SaaS

Every API change risks breaking a customer's integration. Good versioning lets your SaaS API evolve without breaking consumers, including your own agents. The strategies that age well, and the…

14 min read
TECHNOLOGY Multi-TenantArchitecture forHospitality. A hospitality platform serves many hotelgroups and properties from one system… MULTITENANT DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
Insights · Jul 23, 2026

Multi-Tenant Architecture for Hospitality

A hospitality platform serves many hotel groups and properties from one system. Multi-tenant architecture decides how you isolate them, survive one brand's peak-season surge, and keep guest data…

15 min read
TECHNOLOGY Multi-TenantArchitecture forTechnology & SaaS. One codebase, many customers.Multi-tenant architecture decides how… DISCOVERY DESIGN DELIVERY SCALE
Insights · Jul 23, 2026

Multi-Tenant Architecture for Technology & SaaS

One codebase, many customers. Multi-tenant architecture decides how you isolate tenants, contain noisy neighbors, and see per-tenant cost. The patterns that scale, and the ones that trap you.

15 min read
TECHNOLOGY Modular Monolithfor Technology &SaaS. Most SaaS scale-ups reach formicroservices too early and pay for it… ARCHITECTURE SECURITY RELIABILITY COST MODULARMONOLITH
Insights · Jul 23, 2026

Modular Monolith for Technology & SaaS

Most SaaS scale-ups reach for microservices too early and pay for it. A modular monolith gives you clean boundaries without the distributed-systems tax. When it is the right call, and how to build…

14 min read
TECHNOLOGY Domain-Driven Design forScaling Product Teamsfor Fintech. In fintech, a shared model tanglespayments, ledger, risk, and compliance… 01 Assess 02 Design 03 Ship 04 Operate
Insights · Jul 22, 2026

Domain-Driven Design for Scaling Product Teams for Fintech

In fintech, a shared model tangles payments, ledger, risk, and compliance until every change is a negotiation. Domain-driven design draws bounded contexts that survive org changes and keep each…

15 min read
TECHNOLOGY Domain-Driven Design forScaling Product Teamsfor Technology & SaaS. When a SaaS platform grows, the modeltangles and every team steps on every… 01 Discover 02 Prototype 03 Harden 04 Roll out
Insights · Jul 22, 2026

Domain-Driven Design for Scaling Product Teams for Technology & SaaS

When a SaaS platform grows, the model tangles and every team steps on every other. Domain-driven design draws bounded contexts that survive org changes and let teams ship independently.

14 min read
TECHNOLOGY Event-DrivenArchitecture forHospitality. A booking made should updateavailability, housekeeping, revenue… ASSESS ADOPT OPTIMIZE GOVERN
Insights · Jul 22, 2026

Event-Driven Architecture for Hospitality

A booking made should update availability, housekeeping, revenue, loyalty, and the channel managers at once. Event-driven architecture keeps hospitality systems in sync without a fragile chain of…

14 min read
TECHNOLOGY Event-DrivenArchitecture forFintech. A payment authorized should triggerledger, fraud scoring, notifications… STRATEGY DELIVERY GOVERNANCE SCALE EVENTDRIVEN
Insights · Jul 22, 2026

Event-Driven Architecture for Fintech

A payment authorized should trigger ledger, fraud scoring, notifications, and reconciliation without a fragile chain of calls. How event-driven architecture keeps fintech flows consistent and…

14 min read
TECHNOLOGY Event-DrivenArchitecture forEnergy. Meter readings, grid telemetry, andoutage signals arrive constantly and out… DISCOVERY DESIGN DELIVERY SCALE
Insights · Jul 22, 2026

Event-Driven Architecture for Energy

Meter readings, grid telemetry, and outage signals arrive constantly and out of order. Event-driven architecture lets energy systems react to what happened without a brittle chain of calls.

14 min read
TECHNOLOGY Event-DrivenArchitecture forRetail. When one order placed should triggerinventory, fulfillment, loyalty, and… STRATEGY DELIVERY GOVERNANCE SCALE EVENTDRIVEN
Insights · Jul 22, 2026

Event-Driven Architecture for Retail

When one order placed should trigger inventory, fulfillment, loyalty, and analytics, event-driven architecture beats a chain of direct calls. How events keep retail workloads decoupled at peak.

14 min read
TECHNOLOGY API-FirstDevelopment forReal Estate. Why API-first is the precondition for areal estate platform where portals… 01 Pilot 02 Team 03 Org 04 Scale API FIRST
Insights · Jul 22, 2026

API-First Development for Real Estate

Why API-first is the precondition for a real estate platform where portals, listing feeds, and AI agents consume your data. Designing the contract first for reliable syndication.

13 min read
TECHNOLOGY API-FirstDevelopment forFintech. Why API-first is the precondition for afintech platform where partners, open… PEOPLE PROCESS PLATFORM PRACTICE API FIRST
Insights · Jul 22, 2026

API-First Development for Fintech

Why API-first is the precondition for a fintech platform where partners, open banking, and AI agents depend on a stable, secure, auditable contract. Designing the contract before the code.

13 min read
TECHNOLOGY API-FirstDevelopment forTechnology & SaaS. Why API-first is the precondition for aSaaS platform that partners and AI… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · Jul 22, 2026

API-First Development for Technology & SaaS

Why API-first is the precondition for a SaaS platform that partners and AI agents can build on. Designing the contract first so integrations and the ecosystem rely on a stable surface.

13 min read
TECHNOLOGY Mobile App ModernizationWithout Losing YourUsers for Healthcare. How healthcare teams modernize an agingpatient app without breaking trust or… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · Jul 22, 2026

Mobile App Modernization Without Losing Your Users for Healthcare

How healthcare teams modernize an aging patient app without breaking trust or care. Assess honestly, migrate incrementally, roll out gradually, and protect the experience and reliability.

13 min read
TECHNOLOGY Mobile App ModernizationWithout Losing YourUsers for Hospitality. How hospitality teams modernize an agingbooking app without breaking guest… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights · Jul 21, 2026

Mobile App Modernization Without Losing Your Users for Hospitality

How hospitality teams modernize an aging booking app without breaking guest trust. Assess honestly, migrate incrementally, roll out gradually, and protect the experience around the clock.

13 min read
TECHNOLOGY Mobile App ModernizationWithout Losing YourUsers for Retail. How retail teams modernize an agingshopping app without hurting conversion… ASSESS ADOPT OPTIMIZE GOVERN
Insights · Jul 21, 2026

Mobile App Modernization Without Losing Your Users for Retail

How retail teams modernize an aging shopping app without hurting conversion. Assess honestly, migrate incrementally, roll out gradually, and protect the experience through peak.

13 min read
TECHNOLOGY Rewrite vsRefactor forFintech. The rewrite-versus-refactor decision forfintech, where the code encodes money… REWRITE /REFACTOR Rewrite Best fit for your caseSimpler to operateLower switching cost Refactor Added complexityHeavier toolingSteeper learning curve
Insights · Jul 21, 2026

Rewrite vs Refactor for Fintech

The rewrite-versus-refactor decision for fintech, where the code encodes money logic and compliance you cannot afford to lose. A framework weighing embedded value, rewrite cost, and refactoring.

14 min read
TECHNOLOGY Rewrite vs Refactorfor Technology &SaaS. The rewrite-versus-refactor decision forSaaS, where you cannot take the product… REWRITE /REFACTOR Rewrite Best fit for your caseSimpler to operateLower switching cost Refactor Added complexityHeavier toolingSteeper learning curve
Insights · Jul 21, 2026

Rewrite vs Refactor for Technology & SaaS

The rewrite-versus-refactor decision for SaaS, where you cannot take the product down and every tenant is live. A framework weighing embedded value, rewrite cost, and the refactor path.

13 min read
TECHNOLOGY Technical DebtManagement forRetail. How retail teams treat tech debt as aportfolio, paying down the debt that… STRATEGY DELIVERY GOVERNANCE SCALE TECHNICALDEBT
Insights · Jul 21, 2026

Technical Debt Management for Retail

How retail teams treat tech debt as a portfolio, paying down the debt that threatens peak-season reliability and conversion, and carrying the cheap debt deliberately.

13 min read
TECHNOLOGY Technical DebtManagement forTechnology & SaaS. How SaaS teams treat tech debt as aportfolio, paying down the debt that… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights · Jul 21, 2026

Technical Debt Management for Technology & SaaS

How SaaS teams treat tech debt as a portfolio, paying down the debt that drags velocity and margin across a shared codebase and carrying the cheap debt deliberately.

13 min read
TECHNOLOGY AI-Powered CodeModernization forRetail. How retail teams use AI to migratelegacy commerce code without changing… 01 Scope 02 Build 03 Launch 04 Iterate
Insights · Jul 21, 2026

AI-Powered Code Modernization for Retail

How retail teams use AI to migrate legacy commerce code without changing the pricing and promotion logic. Capture behavior, migrate incrementally, and prove equivalence before peak.

12 min read
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