Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- AI & automation4 min
OCR vs Intelligent Document Processing (IDP): Key Differences
OCR turns an image of a document into text; IDP goes further and understands the document — identifies its type, extracts the needed fields, checks them and sends doubtful cases to a person, so the data can go straight into your systems.
Basics - Programming3 min
Semantic Versioning (SemVer) Explained
SemVer is the MAJOR.MINOR.PATCH format, where MAJOR grows on incompatible changes, MINOR on backward-compatible features and PATCH on bug fixes; a lock file pins the exact dependency versions.
Basics - Mobile development4 min
SwiftUI vs UIKit: Which to Use for a New iOS App
For a new iOS app, start with SwiftUI in most cases and use UIKit where you need more control; an existing UIKit project is not rewritten — new screens are added in SwiftUI instead.
Practice - Marketing & analytics4 min
What Is a Tracking Pixel and How Meta and TikTok Pixels Work
A pixel is a snippet of an ad platform's code on your site that sends it events such as page views, leads and purchases. Meta and TikTok use this data to optimize delivery, count conversions and build audiences, so pixel accuracy directly shapes ad performance.
Basics - Design & UX4 min
What Is Brand Identity and What It Consists Of
Brand identity is a system of visual and verbal elements — logo, color, typography, graphics and tone of voice — applied by shared rules at every touchpoint. The logo is only one part of it, and the brand is what people end up thinking about the company.
Basics - Telegram & messengers4 min
How to Connect the WhatsApp Cloud API: Templates and Webhooks
Create a Meta app, add and verify your number, get a permanent token, get templates approved and set up a webhook; you can message customers first only with templates, and free-form messages work for 24 hours after their message.
Practice - E-commerce & CRM3 min
How to Sync Inventory Across Marketplaces and Your Own Store
Keep stock in one system and let every channel receive the available quantity with a small buffer from it; a sale in any channel immediately reduces the shared stock.
Practice - Security4 min
What Is HSTS and How to Enable It Safely
HSTS is a response header that tells the browser to use only HTTPS for your domain for a set period, which blocks downgrade attacks; enable it gradually, raising max-age step by step and adding includeSubDomains and preload only after every subdomain works over HTTPS.
Practice - Databases & data4 min
What Is dbt and How It Transforms Data in the Warehouse
dbt is a tool that runs data transformations directly in your warehouse: you write models as plain SELECT queries, and dbt builds them in the right order, tests them and documents them.
Basics - Hosting & cloud4 min
How to Set Up Yandex 360 Mail on Your Own Domain
Add and verify your domain in the Yandex 360 admin panel, create MX (mx.yandex.net), SPF, DKIM and DMARC records wherever your DNS is managed, set up staff mailboxes, and mail starts arriving as soon as the records propagate.
Practice - IT careers4 min
Who Is a DevOps Engineer and What Do They Do
A DevOps engineer builds the path from a code repository to a working production system: automating builds and deployments, managing infrastructure and keeping everything stable. The role sits between development and operations, so most people move into it with prior experience.
Basics - Tools & no-code4 min
VS Code Remote SSH and Dev Containers Explained
Remote SSH opens a project on a remote machine as if it were local, while Dev Containers runs your development environment in a Docker container defined by devcontainer.json, so the whole team gets the same setup.
Advanced - IT by industry4 min
Production Planning Software: From Spreadsheets to APS
Spreadsheets work while you have few products and machines; once orders, materials and capacity start to conflict, move first to MRP for materials and then to APS for finite-capacity scheduling, one step at a time.
Practice - IT for business3 min
Single-Tenant vs Multi-Tenant SaaS: Business Implications
Multi-tenant is cheaper to run and easier to scale, so it suits the mass market. Single-tenant costs more but makes selling to large clients with strict isolation requirements easier; many products use a hybrid.
Advanced - Web development4 min
Sass vs CSS Modules vs CSS-in-JS: How to Style a Modern App
Sass is a preprocessor for writing CSS more comfortably, CSS Modules scope classes per file, and CSS-in-JS defines styles in JavaScript. For most React apps with SSR, CSS Modules (optionally with Sass) or zero-runtime CSS-in-JS is the safe choice.
Practice - SEO3 min
How to Write an SEO-Optimized Article That Ranks
An article ranks when it matches the same intent as the top results but answers it more fully and clearly: analyze the SERP and outline first, write for people, place keywords naturally, then finish on-page.
Practice - DevOps3 min
How to Set Up Prometheus and Grafana for Monitoring
Prometheus scrapes metrics from exporters over HTTP and Grafana visualizes them; both run from one docker-compose.yml, and a useful first dashboard needs only five or six PromQL queries.
Practice - AI & automation4 min
Open-Source vs Proprietary LLMs: Pros, Cons and Use Cases
Closed APIs give top quality and a fast start with no infrastructure, while open models give data control and predictable costs at high volume. Start with an API and move to open models when you have a concrete reason.
Basics - Programming4 min
SOLID Principles Explained with Practical Examples
SOLID is five rules for keeping code easy to change: one reason to change per class, extension without editing, safe substitution, small interfaces and dependence on abstractions instead of concrete classes.
Practice - Mobile development4 min
Beta Testing Apps with TestFlight and Google Play Testing Tracks
On iOS you distribute betas through TestFlight (internal and external testers); on Android through Play Console tracks (internal, closed, open). The verified build is then promoted to production without rebuilding.
Practice - Marketing & analytics4 min
What Is A/B Testing and What You Can Test on a Website
An A/B test is an experiment that randomly splits traffic between the current page (control) and a changed version (variant), then uses one metric chosen in advance to check which version performs better and whether the difference is more than chance.
Basics - Design & UX4 min
What Is Design Thinking: Stages and Examples
Design thinking is a problem-solving approach that starts with understanding people, then moves through five stages: empathize, define, ideate, prototype and test. Its value is in checking assumptions with real users cheaply before building, not in workshops and sticky notes.
Basics - E-commerce & CRM3 min
What Is 1C and Why Integrate It With Your Online Store
1C is an accounting and trade system that holds products, prices, stock, counterparties and sales documents; integrating it with your store removes manual data entry and errors like selling items that are out of stock.
Basics - Security4 min
What Is ISO 27001 and Does Your Company Need Certification
ISO 27001 is the international standard for an information security management system (ISMS); certification is worth it when clients, tenders or partners explicitly require it, and otherwise a lighter policy set modeled on it is often enough.
Basics
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