Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business3 min
Retail Store Automation: Which Systems You Actually Need
The core set for a store is a POS with stock tracking, then multi-location inventory, accounting integration, loyalty with CRM and an online catalogue; roll them out in that order, starting from a single product catalogue.
Practice - Web development4 min
React vs Vue: Comparison for Your Next Project
Both are fit for serious products. React wins on ecosystem size and the developer market, Vue on an easier start and official built-in solutions.
Basics - SEO3 min
What Are Rich Snippets and How to Get Them
A rich snippet is a search result with extra data such as star ratings, prices or breadcrumbs. You need valid Schema.org structured data (preferably JSON-LD) to get one, but the search engine still decides whether to show it.
Basics - DevOps4 min
What Is OpenTelemetry and How Distributed Tracing Works
OpenTelemetry is an open, vendor-neutral standard and toolkit for collecting traces, metrics and logs; distributed tracing uses it to follow one request across all services by passing a shared trace ID along with every call.
Basics - AI & automation3 min
Common Mistakes When Implementing AI in a Business
Most failed AI projects fail not because of the model but because of no measurable goal, poor data, no testing and trying to remove humans from the process too early.
Practice - Programming3 min
Advanced Regex: Lookahead, Lookbehind and Named Groups
Lookarounds check context without consuming it, named groups make matches readable, and nested quantifiers like (a+)+ are the main source of catastrophic backtracking and ReDoS.
Advanced - Mobile development4 min
PWA vs Native App: When a Progressive Web App Is Enough
A PWA is enough when your product needs a fast launch, link-based access, basic offline mode and notifications without deep hardware access. Go native when Bluetooth, background work, heavy graphics, App Store presence or maximum smoothness matter.
Basics - Marketing & analytics3 min
How to Create UTM Tags: Naming Rules and a Ready Template
Write UTM tags in lowercase Latin letters only, with no spaces, using one approved list of values for source and medium, and rely on dynamic parameters inside ad platforms. Then every channel shows up as one row in reports instead of ten variations.
Practice - Design & UX4 min
What Is a Brand Book and What Should It Include
A brand book is a document that describes a brand's identity and the rules for using it — from mission and tone of voice to logo, colors, fonts and real-world applications. A logobook covers only the logo, and a guideline covers only visual usage rules.
Basics - Telegram & messengers4 min
What Is a Telegram Mini App and How It Works
A Telegram Mini App is a regular HTML, CSS and JavaScript website that opens inside Telegram from a bot's button or link and gets the user's identity, theme, buttons and payments without a separate sign-up.
Basics - E-commerce & CRM4 min
Off-the-Shelf CRM vs Custom CRM: How to Decide
Start with an off-the-shelf CRM if your sales process is fairly standard, because it is fast and cheap to launch; build a custom CRM when your processes are unique, integrations are deep or data control matters more than speed, and you are ready to maintain it.
Basics - Security4 min
Business Email Compromise: How CEO and Invoice Fraud Works
BEC attackers write as a CEO or supplier asking to pay an invoice urgently or change bank details; the defense is a simple rule that any new or changed details are confirmed by calling a known number and approved by a second person.
Basics - Databases & data3 min
What Is an ORM: Pros, Cons and Popular Examples
An ORM is a library that lets you work with database tables as objects in code and generates the SQL for you. It speeds up routine development, but you still need to know which queries hit the database, or you will run into the N+1 problem and slow pages.
Basics - Hosting & cloud4 min
What Is Web Hosting and How Does It Work
Web hosting is renting space and computing resources on a server that is always online: it stores your website's files and delivers them to every visitor.
Basics - IT careers3 min
What Does a QA Engineer Do? Testing as an IT Career
A QA engineer safeguards product quality: checking that everything works as required, finding and describing bugs, and in automation, writing code that runs the checks automatically.
Basics - Tools & no-code4 min
Trello for Beginners: Boards, Lists and Cards
Trello is a Kanban tool where a board is a project, lists are stages of work and cards are tasks moving from left to right; start with three lists, add labels and due dates, and reach for Power-Ups only when a real need appears.
Basics - IT by industry4 min
Pharmacy Inventory Software: Tracking Batches and Expiry Dates
A pharmacy needs stock tracked per batch with its own expiry date, not just per product; the software dispenses whatever expires first (FEFO), warns about short-dated stock early and helps return or move it before it becomes a write-off.
Practice - IT for business4 min
Rewrite or Refactor: When to Rebuild Your Product
In most cases incremental refactoring that replaces parts of the system one by one is safer; a full rewrite is justified only when the old foundation blocks the business and cannot be fixed piece by piece.
Advanced - Web development4 min
How to Analyze and Reduce JavaScript Bundle Size
Inspect the bundle with an analyzer to find the largest modules, then apply tree shaking, replace heavy dependencies, narrow polyfills and move work to the server, recording the size before and after each step.
Advanced - SEO3 min
How to Set Up robots.txt Correctly: Rules and Examples
robots.txt controls how bots crawl your site: block service areas and duplicates, never block CSS, JS or important pages, add a Sitemap line and test the file in Search Console and Yandex Webmaster.
Practice - DevOps4 min
OpenTofu vs Terraform vs Pulumi: Which IaC Tool to Choose
Choose Terraform if you rely on HashiCorp's commercial ecosystem, OpenTofu if you want the same HCL workflow under an open-source license, and Pulumi if your team prefers writing infrastructure in TypeScript, Python, Go or another general-purpose language.
Basics - AI & automation4 min
Multi-Agent Systems: Architecture Patterns and Trade-Offs
A multi-agent system pays off when a task splits into independent parts or needs distinct roles and verification; otherwise a single agent with good tools is simpler, cheaper and more reliable. The main trade-offs are cost, latency and debugging complexity.
Advanced - Programming4 min
Regex Examples: Validating Phones, Emails and URLs
Regex checks format, not existence: normalize a phone to digits and match a pattern, check email with a simple pattern plus a confirmation message, and validate URLs with a built-in parser.
Practice - Mobile development4 min
React Native New Architecture: Fabric, TurboModules and JSI
The New Architecture replaces the async, JSON-serialized bridge with direct calls through JSI: native modules load lazily and are typed via Codegen, and the Fabric renderer supports React's concurrent features. Migration starts with a dependency audit.
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