AI로 넘어가는 IT 실무자를 위한 실전 매뉴얼 — 에이전트, 자동화, 그리고 새로운 스택의 실제 비용에 대한 가이드와 런북, 솔직한 답변.
The weekly AI digest for IT pros: GPT-5.6's three-tier pricing, Meta's first paid API, Kimi K3's 2.8T open weights, the Gemini 3.5 Pro delay — and the misdated story we cut.
A head-to-head comparison of Cursor and Windsurf — pricing, agentic features, context handling, speed, and stability — with a clear verdict on which AI code editor fits your workflow.
Compare the best free regex testers — browser-based, command-line, and editor-integrated — with practical pattern examples and the privacy question to ask before pasting production logs.
Most 'free' QR generators expire your codes or add watermarks. Here are the genuinely free options — static vs dynamic explained, plus print-resolution and testing tips.
Why human-invented passwords fail, what entropy actually means, passphrases vs random strings, and how to use a password generator and manager properly — modern guidance without the myths.
A practical regex reference: character classes, quantifiers, anchors, groups, lookarounds, and flags — plus 7 real-world patterns explained token by token.
The 9 things every valid invoice needs, payment terms that actually get you paid, common freelancer invoicing mistakes, and when a free template beats invoicing software.
Compare the best free JSON formatters, validators, and minifiers — browser-based, command-line, and editor-integrated — plus the privacy question to ask before pasting production data into any of them.
A curated roundup of the best free browser-based developer tools — from JSON formatting to regex testing to diff checking. No installs, no signups, no cost.
Whether you're checking an essay, meeting a blog post target, or analyzing content length — here are 5 ways to count words in any document.
Everything you need to convert CSV files to JSON — manually, with Python, JavaScript, or a free online converter. Covers edge cases and common pitfalls.
What HTML entities are, why they exist, and the complete reference for special characters — from & and < to emoji codes and React/JSX usage.
Binary, octal, decimal, hex — explained in plain English. Learn why hexadecimal exists, how to convert between number bases, and where you'll encounter each one.
Whether you're reviewing code, comparing configs, or checking document changes — here are the best diff tools for every scenario.
The complete guide to CSS units — px, rem, em, %, vw, vh. Why rem is the modern default, the 62.5% trick, and a conversion table you'll use constantly.
MCP is the USB-C of AI — one protocol that lets any AI model talk to any tool. Here's what it is, why it matters, and how developers are using it.
Windsurf hit #1 in AI editor rankings and costs $5/month less than Cursor. We tested both on real projects — here's which one actually writes better code.
Forget dropshipping. These AI-powered side hustles are how real people are making $500-$5,000/month in 2026 — using tools you can learn in a weekend.
Stop reaching for the mouse. These 20 keyboard shortcuts and 5 extensions turn VS Code from a text editor into a productivity weapon — memorize them this week.
Every tutorial assumes you know what .env files are. This one doesn't. Here's what environment variables actually do, why they exist, and how to stop breaking your app with missing keys.
Stop using one AI for everything. ChatGPT and Claude each have clear strengths. Here's when to use which — based on real-world testing, not marketing claims.
You spend 40% of your day on tasks a computer could do. Here's how to identify, map, and automate them in a weekend — using free tools, no coding required.
Nobody teaches you how to read code. Here's the 5-step system that senior engineers use to understand unfamiliar projects fast.
API keys are the passwords of the internet. Here's what they do, why they exist, how to store them, and the horror stories of what happens when you leak one.
Stop Googling Markdown syntax. This cheat sheet covers headings, links, images, tables, code blocks, and everything else — with examples you can copy and use immediately.
34 million Americans work from home. The ones who thrive have these 10 tools dialed in — for communication, focus, project management, and avoiding Zoom fatigue.
Cursor has $2B in revenue and half the Fortune 500 uses it. Here's what it actually does, whether it's worth $20/month, and how non-developers are using it to ship real software.
Git is powerful but brutal to learn. lazygit gives you a visual terminal UI that makes staging, branching, rebasing, and conflict resolution feel like using an app — not writing spells.
You don't need to be technical to use AI at work. These 5 tools handle emails, meetings, reports, and repetitive tasks — and they're either free or under $20/month.
Zapier charges per task. Make charges per operation. n8n charges per workflow execution — and you can self-host it for free. Here's how to automate your work without the SaaS tax.
You don't need to be a writer to write well. AI can help you draft emails, reports, proposals, and content — if you know how to use it without sounding like a robot.
Docker doesn't have to be complicated. Here are the 12 commands that cover 95% of what you'll ever do — explained like you're not already a DevOps engineer.
AI can generate regex patterns, but if you can't read, debug, or modify them, you're flying blind. Here's why regex remains an essential skill — and how to actually learn it.
ORMs and AI can write queries, but they can't think about data. Learn why SQL remains the most valuable technical skill you can learn — and the mistakes that trip up every beginner.
Every API, config file, and data pipeline speaks JSON. Understand why it won, how it works, and the common mistakes that break your code — from trailing commas to nested nightmares.
AI-generated code looks right, compiles clean, and sometimes works. But the bugs it introduces are subtle, dangerous, and expensive. A veteran developer's honest assessment.
Stop Googling '403 vs 401' every time. This is the definitive guide to HTTP status codes — what they mean, when to use them, and the debugging scenarios where they save your day.
Before there were serverless functions and workflow engines, there was cron. Learn the syntax, avoid the pitfalls, and automate tasks that save hours every week.
AI can spot syntax errors and suggest fixes, but real debugging requires mental models, intuition, and environmental awareness that no LLM can replicate. Here's why.
AI can generate git commands, but it can't teach you the mental model behind them. Understand the DAG, the staging area, and why 'git push --force' should terrify you.
chmod 755? chmod 644? If Unix permissions feel like hieroglyphics, this guide breaks it all down — users, groups, octal notation, and the security mistakes that leave servers wide open.
AI copies CSS patterns from Stack Overflow without understanding why they work. Learn the cascade, the box model, and the layout fundamentals that separate working code from fragile hacks.
AI can scaffold a CRUD API in seconds. But authentication, rate limiting, versioning, error design, and idempotency? Those require human judgment. Here's what AI leaves out.
After reviewing thousands of resumes, here's what actually gets you interviews — and the common mistakes that get you filtered out before a human ever sees your name.
Great code doesn't mean great rankings. From meta tags to sitemaps to Core Web Vitals, here are the technical SEO fundamentals that most developers overlook — and how to fix them.
Stop clicking through GUIs. These battle-tested tools will make you faster at everything from debugging to automation — no coding background required.
Stop wasting time fact-checking AI output. Learn the exact techniques to get reliable, verifiable responses from ChatGPT, Claude, and other LLMs — whether you work in tech, marketing, or operations.