Artem Zaitsev
CTO · Idealogic Development OÜ
CTO and Co-founder at Idealogic. Directing engineering, systems architecture, security, and full-stack delivery across web, mobile, and blockchain.
Articles by Artem Zaitsev
What Is MES? Manufacturing Execution Systems Explained
A manufacturing execution system (MES) governs real-time shop-floor production at ISA-95 Level 3: dispatching work orders, enforcing station interlocks, capturing OPC UA telemetry, and building lot genealogy. Here is the engineering blueprint.
Quality Management Software: Modules, Integration, eQMS
Quality management software runs the quality system: document control, non-conformance, CAPA, audits, SPC, and supplier quality. Here are the modules, how they close the loop, how the QMS integrates with ERP and MES, what validation demands, and when to build instead of buy.
Production Planning Software: MRP vs APS and Finite Scheduling
Standard ERP material requirements planning assumes infinite machine capacity and static lead times. Here is how modern Advanced Planning and Scheduling software uses constraint programming, setup matrices, and real-time MES telemetry to build executable factory schedules.
Predictive Maintenance Software: How It Actually Works
Predictive maintenance software ingests vibration, current, and thermal telemetry to forecast equipment failures across the P-F interval. Here is the ISO 13374 architecture, edge FFT feature extraction, RUL modeling, and CMMS work-order automation.
PLM Software: BOMs, Engineering Change, Integration
PLM software manages the product definition: CAD data, the engineering and manufacturing BOMs, and engineering change. Here is what it is, how the eBOM becomes the mBOM, how change flows through ECR-ECO-ECN, where the ERP boundary sits, and when to build instead of buy.
OEE: What Overall Equipment Effectiveness Really Tells You
Overall equipment effectiveness (OEE) multiplies Availability, Performance, and Quality into one score. Here is the ISO 22400-2 math, TEEP vs OOE worked examples, Six Big Losses mapped to PackML PLC states, and how to build a real-time OEE stack.
Manufacturing Inventory Software: WIP to Valuation
Manufacturing inventory software is not a retail stock tracker: it follows material through raw, work-in-process, and finished-goods states driven by the bill of materials. Here are the states, backflushing, traceability, valuation, and when to build instead of buy.
Manufacturing ERP: Modules, Integration, Build vs Buy
Manufacturing ERP is the system of record that ties planning, the shop floor, inventory, and costing together. Here are the modules, how it integrates with MES and machines, discrete vs process differences, and when to build instead of buy.
CMMS Software: Data Model, Integration, Build vs Buy
CMMS software runs maintenance: assets, work orders, preventive schedules, and spare parts. Here is the data model behind it, how it schedules PMs and integrates with ERP and IoT, the KPIs it computes, and when to build instead of buy.
What Is a Smart Factory? IT/OT Architecture & Implementation Guide
Most Industry 4.0 pilots die in proof-of-concept purgatory because of point-to-point IT/OT integration spaghetti. Here is how to architect an event-driven smart factory using Unified Namespace, brownfield PLC gateways, and IEC 62443 network segmentation.
Warehouse Management System Development: Custom WMS Guide
Warehouse management system development means engineering bin-level inventory, sub-150ms RF scan workflows, directed putaway, wave/waveless picking, and GS1-128/ZPL label printing around your floor. Here is how a custom WMS is built in 2026.
What Is a Transportation Management System (TMS)? 2026 Guide
A transportation management system (TMS) plans loads, rates contract and spot tariffs, automates EDI 204/990 carrier tendering, tracks EDI 214 status events, and runs three-way EDI 210 freight audits. Here is how TMS architecture works in 2026.
Order Management System: How It's Built
An order management system orchestrates an order from any channel to delivery. Here's the core services, the inventory and ATP logic, distributed order management, the EDI integrations, and what it takes to build.
Last-Mile Delivery Software: How It Is Built in 2026
Last-mile delivery software runs the loop from depot to door: dispatch, routing, a driver app, live tracking, proof of delivery and exceptions. How each part is built, what the measured economics say, what it costs to buy, and when building your own is the right call.
Fleet Management Software: How It Is Built in 2026
Fleet management software turns vehicle telematics into decisions about location, driving, cost and compliance. How it is built in 2026: the CAN bus to dashboard pipeline, ELD and tachograph rules as requirements, measured safety and fuel evidence, and the cost to buy or build.
3PL Software: Multi-Tenant Architecture and Billing
3PL software is a multi-client warehouse platform with billing and client portals on top. Here's the multi-tenant architecture, the 3PL billing engine, the integrations, and what it takes to build.
Decentralized Exchange Development: Architecture and Cost
A build guide for decentralized exchange development: how AMM, order-book and intent designs differ, what the architecture really contains, what a fork costs you in licence terms, and a cost model with its assumptions written down.
Property Management Software: Architecture and Build
Property management software is a ledger and a trust-accounting system with portals on top. Here is the data model behind units, leases, and tenants, how the tenant ledger and trust accounting work, how rent payments and screening integrate, and when to build instead of buy.
Automated Valuation Model (AVM): Architecture, Accuracy & QC Rules
An automated valuation model (AVM) estimates property value from MLS feeds, county deeds, spatial indices, and computer vision. Learn how production AVM ensembles work, what IAAO error metrics and FSD scores mean, where AVMs break, and how 12 CFR Part 1026 governs QC.
Revenue Cycle Management Software: How It's Built
Revenue cycle management software turns care delivered into cash collected. Here's the claim lifecycle as a system, the EDI standards behind it, denial automation, and what it takes to build.
Patient Engagement Software: How It's Built
Patient engagement software is the patient-facing layer of a health product. Here's the portal architecture, the Cures Act patient-access APIs, the messaging engine, patient identity, and what it takes to build.
Medical Device Software Development: SaMD, IEC 62304 & FDA
Medical device software is defined by intended use, not tech stack. Here is how IEC 62304 safety classes, FDA 2023 premarket documentation, EU MDR Rule 11, ISO 14971 risk traceability, and FDA Section 524B cybersecurity govern your build.
Healthcare Data Analytics: Architecture and How to Build It
Healthcare data analytics turns clinical, claims, and device data into decisions. Here's the four types, the reference architecture, HL7/FHIR integration, HIPAA de-identification, and the ML pipeline behind it.
EHR vs EMR: The Architectural Difference for Health Tech
An EMR is a single clinic's digital chart; an EHR is a longitudinal patient record engineered to travel across institutions. Here is how ONC certification, USCDI, HL7 v2, and FHIR R4 separate the two and shape your integration architecture.
E-Signature Software Development: Tiers, APIs, and Cost
E-signature software development is mostly a compliance problem wearing an engineering costume. Here are the eIDAS tiers, what a signing API gives you, where KYC belongs, and what a real build costs.
EHR Integration Services: What They Cost and How to Choose a Partner
Seven in ten US hospitals now expose FHIR APIs, yet most EHR integration projects still stall for months. This is what the standards do, how Epic access actually works, what drives the bill, and how to tell a real EHR integration company from a reseller.
Top Aviation Software Development Companies (2026 List)
Airlines, airports and maintenance organisations buy very different software from very different suppliers. Here is what an aviation software development company actually does, the certification and data standards that constrain the build, and how to evaluate one.
Top 10 Custom Software Development Companies in 2026
Ten custom software development companies worth a shortlist in 2026, ordered by scale rather than by who paid for the placement. Plus the five firm archetypes, the evaluation checks that matter, and what each engagement model really costs.
Banking Software Development: Systems, Regulation, and Cost
Banking software development is the engineering of the systems a bank runs on: the ledger, the channels, the payment rails, and the compliance layer around them. What each layer does, which rules bind it, how to integrate a legacy core, where crypto fits, and what a build costs.
Clinical Trial Management Software: How It's Built
Clinical trial management software runs the operational side of a trial. Here's where it sits among EDC and eTMF, the data model, CDISC integration, 21 CFR Part 11, and what it takes to build.
Medical Practice Management Software: How It's Built
Medical practice management software is the administrative spine of a clinic. Here's the scheduling engine, the PMS-EHR-RCM boundary, the multi-location data model, and what it takes to build one.
Social Media Management Software: How to Build It
Social media management software publishes, schedules, and analyzes a brand's content across many networks from one place. Here is how the multi-network publishing layer is built, why a naive scheduler double-posts, the calendar and approval model, and when to build vs buy.
Membership Platform Software: Billing and Access
Membership platform software is an access-control and recurring-billing system: members pay on a schedule and unlock gated content. Here is the data model, the subscription state machine, dunning, content gating, what SCA and tax demand, and when to build instead of buy.
Custom Blockchain Development: When to Build vs Buy
Custom blockchain development means four very different jobs, from writing your own contracts on a public chain to standing up a base layer. This guide separates them, prices each route against published figures, and runs the build or buy call in order.
Blockchain Game Development: Build a Web3 Game Like Pixels
Blockchain game development turns in-game items and currency into player-owned tokens on a blockchain. This guide explains what a blockchain game is, how on-chain ownership works, the web3 tech stack, how a game like Pixels is built, and how to design play-and-earn that lasts.
Software Development Trends: A Complete Overview for 2026
Every year brings a new list of software development trends. This overview cuts past the hype: what drives trends, the AI-native shift reshaping how software gets built, the trends of 2026 with the data behind them, and a test for which ones are worth adopting.
Media Software Development: Media Software Solutions & Systems
Media software development is how streaming platforms, OTT apps, broadcast tools, and digital asset systems get built. This guide covers what media and entertainment software is, its main types, the encoding, CDN, and DRM tech underneath, and what it takes to build it.
How to Create a Messaging App: Architecture and Cost
A messaging app looks like three simple screens and operates like a distributed database underneath. Here is how to engineer WebSocket and MQTT connections, ULID idempotency, Signal Double Ratchet vs RFC 9420 MLS encryption, SQLite FTS5 sync, and 2026 costs.
How to Build a Live Streaming App: Architecture and Cost
Glass-to-glass latency dictates every decision in live streaming app development: sub-500ms WebRTC for interactive stages, 2 to 4 second LL-HLS for 100k-viewer broadcasts, ABR transcoding ladders, sharded live chat, gifting ledgers, and 2026 infrastructure costs.
How to Build a Dating App: Matching, Safety & Architecture
A dating app is a reciprocal matching engine with a swipe UI on top. This guide covers how to build a dating app: two-stage PostGIS spatial retrieval, reciprocal ranking, double-opt-in WebSocket chat, liveness checks, and StoreKit 2 monetization.
Creator Monetization Platforms: Architecture, Ledgers & Cost
Every creator monetization platform is a regulated payments and double-entry ledger engine wearing a content UI. Here is how to build the five revenue rails, navigate Apple's 30% IAP fee, engineer Stripe Connect splits and rolling reserves, and automate DAC7/1099-K taxes.
Content Moderation Software: Build the Pipeline
Content moderation software is a trust and safety system: it ingests content, classifies it, queues the hard cases for human review, and enforces policy. Here is the pipeline, AI classification, the review queue, the policy engine, CSAM and DSA compliance, and build vs buy.
Community Platform Software: Architecture and Build
Community platform software is an engagement engine: spaces, members, posts, and a real-time feed. Here is the data model, how the activity feed fans out at scale, how roles work, how federation and white-label multi-tenancy are built, and when to build instead of buy.
How to Build a Social Media App: Architecture & MVP Guide
Most social apps fail from an empty feed, not broken UI. This guide covers how to build a social media app: cold-start utility, social graph schemas, hybrid Redis feed fan-out, HLS media pipelines, and Apple 1.2 plus EU DSA moderation.
React Native vs Flutter in 2026: Benchmarks & Decision Guide
Both React Native and Flutter eliminated their legacy performance bottlenecks by 2026. Here is our head-to-head engineering benchmark across JSI/Fabric vs Impeller, memory, binary size, OTA hotfixes, Kotlin Multiplatform, and developer hiring pools.
Native vs Cross-Platform App Development: 2026 CTO Guide
Choosing between dual native (Swift and Kotlin), cross-platform (React Native or Flutter), shared-logic KMP, and PWAs sets your 3-year engineering budget. Here is the 10-dimension decision matrix, TCO math, and the exact hardware thresholds where native wins.
Mobile App Security: OWASP MASVS Checklist & Best Practices
A mobile app runs on an untrusted device you do not control. Here is the engineering guide and OWASP MASVS v2.1 mobile application security checklist we use to secure storage, OAuth 2.0 PKCE, TLS pinning, and hardware attestation on iOS and Android.
Mobile App Development Trends in 2026: A CTO's Roadmap Guide
Most annual trend lists are vendor hype. Here are the eight mobile app development trends actually changing engineering architectures and budgets in 2026, from hybrid on-device NPU inference and FIDO2 Passkeys to EU DMA billing and local-first sync.
Mobile App Architecture: Layers, Patterns & Offline-First (2026)
Every mobile app has an architecture, whether anyone chose it or not. Here is how we structure Presentation, Domain, and Data layers, choose between MVVM, MVI, and VIPER/TCA, and engineer offline-first outbox queues that survive flaky cellular networks.
How to Build an iOS App in 2026: Swift, SwiftUI & App Store
A practical engineering guide to iOS app development in 2026: how we architect native iPhone and iPad apps using Swift 6 strict concurrency, SwiftUI and UIKit interop, StoreKit 2, Secure Enclave security, and automated TestFlight to App Store pipelines.
Cross-Platform App Development: Architecture & Tradeoffs
Cross-platform app development lets one engineering squad ship to both iOS and Android without maintaining two codebases. Here is how modern runtimes execute on silicon, how to structure the 85/15 shared-to-native boundary, and when native code is still mandatory.
How to Build a Mobile App: A Step-by-Step Guide (2026)
Most guides on how to build a mobile app stop where the real mobile engineering starts. Here is the 7-stage lifecycle we run at Idealogic to take an iOS and Android product from initial scope lock and architecture to real-device QA and first-try App Store approval.
Types of Digital Wallets: Closed, Open, Crypto, and MPC
No two lists of digital wallet types agree, because wallets sort along four axes: the loop they spend in, the form they take, who holds the credential, and what asset sits inside. This guide runs all four, with the regulatory definitions and the adoption data behind them.
Smart Contract Audit Cost: 2026 Prices, Drivers, and Scope
Almost nobody publishes a price list for smart contract audits. This guide collects the references that do exist, dated and linked: Sherlock's 2026 bands, public contest award pools, and a vendor calculator that returns a form instead of a number. Then what moves the figure.
How to Create a Cryptocurrency: Coins, Tokens & Costs
Creating a cryptocurrency is three different projects wearing the same name. This guide separates them: a token on an existing chain, your own appchain, or a no-code launcher. With a working ERC-20, the 2026 rulebook in the EU and the US, and a costed model of each route.
Enterprise Blockchain: Use Cases, Platforms & Adoption
Most enterprise blockchain pilots still stall before production. This guide names the projects that are actually live in 2026 and the ones that were shut down, compares the platforms worth evaluating, and shows how to scope a proof of concept that has a real chance of shipping.
Blockchain dApp Development: A Step-by-Step Build Guide
A working dApp is three layers plus the wiring between them. This guide walks blockchain dApp development the way a team sequences it: chain and stack choice, contract design, wallet integration, indexing, testing, the audit gate, deployment, and what it costs to run.
Smart Contract Development: Lifecycle, Patterns, Cost
Smart contract development is mostly verification, not typing. This guide walks the lifecycle from specification to monitoring, with Solidity code, a language and chain comparison, exploit losses measured from DeFiLlama, and what an audited build costs.
DeFi Protocols Explained: 7 Main Types, 2026 TVL List & Risks
DeFi protocols are the financial building blocks behind every dApp. This guide covers what one is, the main types, a dated list of the largest protocols by value locked, and the risks that decide whether one is safe to build on.
dApp Examples: Decentralized Apps That Work in 2026
A dApp runs its core logic in smart contracts on a public blockchain instead of a company's servers. Here is what that buys you, what it costs, where the users actually are as of August 2026, and which of the confident predictions made two years ago turned out to be true.
Crypto Wallet App Development: Architecture, Security, Cost
A wallet holds keys, not coins, so key handling decides the architecture, the security budget and whether you need a licence. Custody models, the component architecture, measured theft data, the MiCA and FinCEN thresholds, and a cost model in engineer-weeks.
Blockchain Security: Threats, Controls, and Audits
Blockchain security is where the money gets lost, and it is almost never the chain. This guide walks the threat model layer by layer, reads the measured loss data from 2020 to 2026, and covers the contract, key, bridge, and operational controls that hold.
Web3 Development Guide (2026): Full Stack, Costs & 7 dApp Layers
Web3 development swaps the central server for a blockchain, and that one change rewrites the whole stack. Here is the 2026 version: chains, contracts, indexers, wallets, the build sequence, what it costs, and the on-chain data behind each decision.
What Is a Fractional CTO? Role, 2026 Cost & When to Hire
A fractional CTO gives startups and SMBs executive technical leadership for one to two days a week without the $300k+ full-time compensation package. Here is what the role covers week to week, how the 2026 cost math works, and how to structure a 90-day engagement.
Technical Due Diligence: The 2026 Checklist & Workflow
Before a funding round or acquisition closes, technical due diligence reveals whether the software is a scalable asset or an unpriced rewrite. Here is the six-domain checklist, two-week audit workflow, and remediation pricing model we use at Idealogic.
Wealth Management Software: How It Works and How to Build It
Wealth management software runs the portfolios, reporting, and advice an advisory firm delivers. Here's the data model, the rebalancing and performance engine, custodian aggregation, the compliance behind it, and build vs buy.
Payment Processing Software: How It Works and How to Build It
Payment processing software is the engine that moves money for merchants. Here's how authorization, clearing, and settlement work, the ledger and reconciliation underneath, the PCI scope, and build vs buy.
Loan Management Software: How It Works and How to Build It
Loan management software runs a loan from origination through servicing to payoff. Here's the lifecycle as a system, the servicing and amortization engine, the compliance you build in, and build vs buy.
KYC Software: How It Works, Build vs Buy, and Cost
KYC software verifies who your users are and screens them against sanctions and watchlists. Here's how the pipeline works, what to build vs buy, the regulations that shape it, and the cost.
Fraud Detection Software: How It Works and How to Build It
Fraud detection software monitors transactions and behaviour to catch financial fraud after onboarding. Here's how the pipeline works, the rules-and-ML scoring engine, the AML overlap, and build vs buy.
Embedded Finance: How It Works and How to Build It
Embedded finance puts banking, payments, and lending inside non-financial products. Here's how it works, what it costs to build, and the architecture and compliance behind it.
Digital Banking Software: How It Works and How to Build It
Digital banking software is the customer-facing channel of a bank or neobank: onboarding, accounts, cards, and payments over a core ledger. Here's how it works, the three-layer model, the security and compliance, and what it costs to build.
Core Banking Software: How It Works and How to Build It
Core banking software is the ledger and system of record under a bank. Here's how the account master, the double-entry ledger, and the posting engine work, where it sits against digital banking and BaaS, and what a custom build costs.
Banking as a Service: How the Stack Works and the Cost
Banking as a service lets a software product offer accounts, cards, and payments through a licensed bank's rails. Here's how the BaaS stack is wired, what you build vs buy, the compliance after Synapse, and the cost.
Payment Gateway Integration: Methods, PCI Scope, and Cost
Payment gateway integration is more than dropping in an API. Here's how the methods differ, how each sets your PCI DSS scope, the architecture for reliable payments, and what it costs.
Model Context Protocol (MCP) for Developers
The Model Context Protocol is an open standard for connecting AI applications to your data and tools. A practitioner's guide to how MCP works, the host-client-server model, its tools, resources, and prompts, building an MCP server, and the security part most demos skip.
Claude Code Skills: Teaching Your AI Coding Agent Your Stack
Claude Code skills are folders of instructions a coding agent loads only when relevant. A practitioner's guide to the SKILL.md model, progressive disclosure, how skills differ from MCP, and how to author ones that encode your stack's conventions instead of bloating context.
The AI Software Engineer: What the Role Actually Is Now
An AI software engineer is an engineer who builds software with AI in the loop, directing agents and owning the result. A grounded look at how the role changed, the skills that now matter, how it differs from ML and prompt engineering, and how to grow into it.
AI Pair Programming: How Senior Engineers Work With AI
AI pair programming is working with an AI as your coding partner: it drives or navigates while you hold judgment. A grounded look at the day-to-day practice, a real session, where it shines, where it quietly fails, and the habits senior engineers use to keep it honest.
AI Coding Tools in 2026: The Landscape, Honestly
There is no single best AI coding tool, and any ranking is stale within a month. This is a vendor-neutral map of the categories that hold their shape, the selection criteria that actually matter, and the trade-offs nobody puts in the demo. A dated mid-2026 snapshot.
Agentic Coding: Building Software With AI Agents in the Loop
Agentic coding is directing an AI agent through real engineering work: it plans, acts, and checks itself in a loop while you set direction and review. A grounded guide to how the loop runs, where agents earn their keep, where they thrash, and the guardrails that keep it safe.
Vibe Coding: A Practitioner's Guide to Shipping With AI
Vibe coding is describing what you want in plain language and letting an AI write the code. A grounded guide to the workflow, where it breaks on security and maintainability, and how senior teams ship with it without shipping garbage.
Software Development Methodologies: 8 Models Compared (2026 Guide)
Choosing between Agile, Scrum, Kanban, Shape Up, or the V-Model shapes how fast your team learns and where your budget goes. Here is an engineering-first comparison of the 8 software development methodologies that actually show up in production.
Product Development Process: 6 Stages, Kill-Gates & Playbook (2026)
Most software products do not fail because engineers forgot how to write code. They fail in the stages around the code: unvalidated problems, unscoped integrations, and missing kill-gates. Here is the six-stage product development process we run at Idealogic.
Multi-Tenant SaaS Architecture: Models, RLS & Isolation
Multi-tenant SaaS architecture determines whether your platform scales cleanly from 10 to 10,000 organizations or drowns in database migrations and noisy-neighbor incidents. Here is our engineering guide to Silo, Bridge, and Pool models, PostgreSQL RLS, and hybrid routing.
How to Build a Web App: Stack, Steps, and Cost (2026)
A web app is more than a website with a login. Here is how to build one that holds up in production: the 8-step engineering workflow, modern rendering architecture, API contracts, Core Web Vitals, security baseline, and 2026 build costs.
How to Build a SaaS in 2026: Architecture, Stack & Cost
Building a SaaS product means shipping the commercial control plane (multi-tenancy, RBAC, entitlement billing, and audit telemetry) alongside the core workflow. Here is our 7-step blueprint, 2026 stack, and cost breakdown.
Enterprise Software Development: Architecture, Cost & 2026 Guide
Enterprise software succeeds or fails on the architectural layers a demo never shows: federated identity, ERP integrations, audit trails, and zero-downtime migration. Here is how to architect, budget, and ship enterprise systems without a multi-year stall.
Software Development Life Cycle (SDLC): 7 Phases & 2026 Guide
The software development life cycle (SDLC) is the engineering spine behind every reliable software system. Here is how its seven phases, delivery models, security gates, and AI-assisted workflows operate in real production builds.
RAG vs Fine Tuning: Which One Your LLM Actually Needs
RAG changes what a model knows. Fine tuning changes how it behaves. Teams pick wrong because they never ask which of the two is broken. Here's what the published benchmarks actually show, what each approach costs, how they stack, and how to diagnose your own case.
LLM Architecture: From Transformer Block to Production
Ask about LLM architecture and you get two different answers: how the model works inside, and how the system around it is built. Both matter, but only some of the internals change a decision you will actually make. Here is the whole stack, layer by layer.
Generative AI Implementation: From Demo to Production
What a generative AI implementation actually involves: hosted models versus self-hosting, prompt and context design as engineering, where retrieval belongs, guardrails and content safety, evaluation before and after launch, cost per request at scale, and the integration surface.
Fine Tuning LLM: A Practical Guide to Doing It Well
Most teams reach for fine-tuning when prompting or RAG would have shipped faster and cheaper. This guide covers the real decision: when fine tuning an LLM pays off, how to prep data, LoRA vs QLoRA, evaluation, cost, and the pitfalls we see in production.
AI API Integration: From First Call to Production
Calling an AI API is four lines of code. Keeping that call standing under real traffic is the actual work. Here's what AI API integration takes in production: keys, rate limits, latency budgets, streaming, retries, cost ceilings, fallback, and evals.
Agentic AI vs AI Agents Explained: The Real Difference
Agentic AI vs AI agents is not a synonym pair. Agentic names a property a system has by degree; an agent is a countable thing you deploy. Where the boundary sits, where the industry disagrees, why vendors blur it, and how the distinction changes what you build.
AI Agents for Business: Use Cases, Cost, and Build vs Buy
Most AI agent pitches are a demo with a business case bolted on. What agents actually automate, which functions pay back first, when to buy instead of build, what a real deployment costs, and how to spot a use case that will not survive production.
Agentic AI in Production: How to Evaluate and Prove Your Agent Works
Everyone ships agents. Almost nobody can say whether theirs works. AI agent evaluation is the discipline that answers it: task success versus step accuracy, eval sets that decay, LLM-as-judge and its measured biases, trajectory analysis, and cost as a first-class metric.