Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- E-commerce & CRM4 min
What Is E-commerce: B2C, B2B, D2C, C2C and Marketplace Models
E-commerce is selling goods and services online, and the model tells you who sells to whom: a business to people (B2C), to other businesses (B2B), a maker directly to buyers (D2C), people to people (C2C), or many sellers through one platform (marketplace).
Basics - Security3 min
What Is XSS: Cross-Site Scripting Types and Examples
XSS is a vulnerability that lets someone else's JavaScript run on your site in a user's browser. The core defense is encoding all data on output for its context: HTML, attribute, URL or script.
Basics - Tools & no-code4 min
What Is Notion and How Teams Use It
Notion is a workspace builder made of pages, blocks and databases that teams use for wikis, tasks and docs; it shines for flexible processes but struggles with strict workflows, heavy analytics and offline work.
Basics - IT by industry4 min
Online Table Reservations for Restaurants: Options Compared
Most restaurants do best with one booking system and a table map that the website, a Telegram bot and the phone host all feed into; deposits and reminders cut no-shows more than any single channel.
Practice - IT for business3 min
Source Code Escrow: How It Protects Software Buyers
Source code escrow is an agreement where code is held by an independent agent and released to the buyer if the vendor stops meeting its obligations. It is useful for critical software, but only when the deposit is verified regularly.
Advanced - Web development4 min
Web Accessibility Checklist for Developers
Make sure everything works by keyboard with visible focus, images and fields have text names, contrast is sufficient, markup is semantic, motion respects reduced motion, then test with axe and a screen reader.
Practice - SEO4 min
Server Log File Analysis for SEO: How Bots Crawl Your Site
Server logs show which URLs Googlebot and YandexBot actually crawl: filter by user-agent, confirm bots with reverse DNS, and compare crawled URLs with your list of important pages.
Advanced - DevOps3 min
How to Run an App as a systemd Service on Linux
Create a unit file in /etc/systemd/system with ExecStart, User, WorkingDirectory, EnvironmentFile and Restart=on-failure, run daemon-reload and enable --now, and read logs with journalctl -u.
Practice - AI & automation4 min
How to Stream LLM Responses in a Web App
Request a stream from the LLM API, forward each chunk to the browser as Server-Sent Events, read it with fetch and a stream reader, append text to the UI as it arrives, and make sure no proxy buffers the response.
Practice - Programming4 min
TypeScript Generics: How to Write Reusable Typed Code
A generic is a type parameter that lets one function or type work with different data while keeping precise types, without falling back to any.
Practice - Mobile development3 min
What Is React Native and How Does It Work
React Native is Meta's framework where you describe the UI in JavaScript or TypeScript using React, and real native iOS and Android components appear on screen. It pays off most for teams that already build their web with React.
Basics - Marketing & analytics4 min
What Is Google Tag Manager and Why Marketers Use It
Google Tag Manager is a free container that lets marketers add analytics and ad pixels without editing site code. A developer installs GTM once and sends events to the dataLayer; after that, tags are configured, tested and rolled back in the interface.
Basics - E-commerce & CRM4 min
What Is an ERP System: Modules, Benefits and Who Needs It
An ERP system connects finance, procurement, warehouse, production and HR on one database, so every action in one department instantly shows up in all the others without anyone copying data by hand.
Basics - Security4 min
WordPress Security: How to Harden Your Site Step by Step
Most WordPress hacks come through outdated plugins and weak passwords, not the core. Keep everything updated, run a small set of vetted plugins, protect login with 2FA and attempt limits, disable the file editor and unused XML-RPC, set sane permissions and keep off-site backups.
Practice - Tools & no-code4 min
What Is Postman and How to Test an API With It
Postman is an app for sending requests to an API by hand and seeing what the server returns: you set the method, URL, headers and body, press Send and read the status code, timing and response data.
Basics - IT by industry3 min
Restaurant POS System: Features That Matter
A good restaurant POS carries an order from the table to the kitchen and inventory: floor plan, modifiers, split bills, routing to kitchen printers or screens, recipe cards with stock deduction, staff permissions and delivery-platform orders in one place.
Basics - IT for business3 min
How to Get Real Value from Sprint Reviews as a Client
A sprint review pays off when you arrive knowing the sprint goal, try the working product yourself, give specific feedback and leave with decisions: what is accepted, what needs rework and what comes next.
Practice - Web development4 min
Web Components Explained: Custom Elements and Shadow DOM
Web Components are browser standards for building your own HTML tags with isolated styles; they shine in design systems and widgets that must work in any framework.
Advanced - SEO4 min
Site Architecture for SEO: Click Depth and URL Hierarchy
Pages that sit many clicks away from the homepage get crawled less often and receive less internal link equity, so on large sites keep important pages within about three to four clicks using hubs, category links and pagination that does not bury content.
Advanced - DevOps4 min
Terraform Modules: How to Structure Reusable Infrastructure
A good Terraform module wraps one coherent piece of infrastructure behind a small set of typed inputs and useful outputs, is versioned and pinned, and is called from thin per-environment root configurations with separate state.
Practice - AI & automation4 min
How to Get Reliable JSON Output From an LLM
The most reliable option is schema-constrained output (structured outputs) when your model and API support it; JSON mode only guarantees valid syntax, and a prompt instruction alone guarantees nothing. Either way, validate the response against a schema in code and retry on failure.
Practice - Programming4 min
TypeScript type vs interface: When to Use Each
For object shapes, type and interface are almost interchangeable. Use interface when extends and declaration merging matter, and type for unions, tuples and computed types. Most importantly, agree on one team rule.
Practice - Mobile development4 min
Why Mobile Apps Need Regular Updates After Release
Mobile platforms change every year: Apple and Google ship new OS versions, raise build requirements and retire old APIs, so an app left without updates slowly starts to break, loses the ability to ship fixes and, on Google Play, eventually becomes unavailable to new users.
Basics - Marketing & analytics4 min
What Is Influencer Marketing and How to Measure Its Results
Influencer marketing is promotion through people your audience already trusts: bloggers, experts, channel authors. You measure it by sales, not reach, and personal promo codes and UTM links are what make those sales visible.
Basics
Have an idea or a task? Tell us about it
We'll reply within one business day and propose a solution. The consultation is free.