Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- Marketing & analytics4 min
What Are UTM Tags and Why Every Ad Link Needs Them
UTM tags are parameters added to a link that tell analytics where a visit came from: source, medium, campaign, keyword and ad variant; without them paid traffic often shows up as direct or referral and you cannot tell which ad worked.
Basics - Design & UX4 min
What Is a Design System and Why Products Need One
A design system is a shared set of design decisions — tokens, reusable components in design and code, usage rules and documentation — that lets a team build consistent interfaces faster. It pays off once several people or several products work on the same interface.
Basics - Telegram & messengers4 min
WhatsApp Business App vs WhatsApp Business API: Key Differences
The WhatsApp Business app is a free tool for a small team answering customers by hand; the WhatsApp Business API is a platform with no built-in interface for many operators, bots, CRM integrations and template messages billed per message.
Basics - E-commerce & CRM4 min
How to Sell on Wildberries From Uzbekistan
A company or sole proprietor registered in Uzbekistan can sign up on the Wildberries seller portal directly; after that it comes down to strong product cards, the right fulfillment model, reconciling payout reports and tracking buyout rate, turnover and stock.
Practice - Security3 min
What Is Clickjacking and How to Prevent It on Your Website
Clickjacking loads your site in an invisible iframe over a decoy, so users click your button while thinking they click something else. Prevent it by forbidding framing with the CSP frame-ancestors and X-Frame-Options headers.
Basics - Databases & data3 min
What Is Business Intelligence (BI) and How It Helps Decisions
Business Intelligence (BI) is a set of tools and processes that turns data from operational systems into regular reports and dashboards, so decisions rely on current numbers instead of gut feeling.
Basics - Hosting & cloud3 min
Why a Business Needs Email on Its Own Domain
Email on your own domain looks more credible, lands in spam less often thanks to SPF, DKIM and DMARC, and belongs to the company rather than the employee. When someone leaves, you keep their correspondence and the address clients write to.
Basics - IT careers3 min
What Does a Backend Developer Do? Role and Required Skills
A backend developer builds the server side of a product: storing and processing data, implementing business rules, serving data to the interface via APIs and connecting the system to external services.
Basics - Tools & no-code4 min
VLOOKUP vs XLOOKUP vs INDEX MATCH: Which to Use
In Excel 365/2021 or Google Sheets, default to XLOOKUP; use INDEX MATCH when the file must work in older Excel versions, and keep VLOOKUP for small, stable tables where the key sits in the first column.
Practice - IT by industry4 min
How to Launch Online Ordering and Delivery for a Pharmacy
Pharmacy online ordering rests on a catalog that shows real stock in each branch; start with reservation and pickup, then add delivery and online payment via Payme/Click, and handle prescription drugs as a separate flow that follows the regulator's rules.
Practice - IT for business4 min
SaaS Metrics Explained: MRR, Churn, LTV and CAC
MRR is your recurring monthly revenue, churn is how many customers or how much money you lose, LTV is what a customer brings over their lifetime and CAC is what it costs to win them. A healthy SaaS has LTV well above CAC and a short payback.
Basics - Web development3 min
Responsive Web Design: Media Queries, Breakpoints and Mobile First
Responsive design starts with the viewport tag and base styles for mobile, which media queries then extend for larger screens. Set breakpoints where content breaks, scale type with clamp() and adapt components with container queries.
Practice - SEO4 min
How to Find Quick SEO Wins in Google Search Console Data
Pages that are already close to the top grow fastest: find queries in positions 5-20, pages with high impressions but low CTR, and declining URLs in Search Console, then make a concrete title, content or internal linking fix for each.
Practice - DevOps4 min
Platform Engineering vs DevOps vs SRE: Roles and Differences
DevOps is a culture of shared ownership between development and operations, SRE applies software engineering to reliability with SLOs and error budgets, and platform engineering builds an internal self-service platform so developers can ship without waiting for ops.
Basics - AI & automation3 min
Object Detection With YOLO: From Dataset to Deployment
A YOLO project is mostly data work: collect frames from real conditions, label them carefully, fine-tune a pretrained model, check mAP on held-out data and export for your hardware.
Practice - Programming4 min
How to Resolve Merge Conflicts in Git
A conflict happens when two branches change the same lines differently; you pick the final version, remove the markers, run git add and finish the merge.
Practice - Mobile development4 min
How to Reduce Mobile App Download Size on iOS and Android
Measure the per-device download size in the store consoles first, then shrink it in order: app bundles and app thinning, R8, compressed images and fonts, removing unused SDKs and moving rare content to on-demand delivery.
Practice - Marketing & analytics4 min
What Is a Lead Magnet and How to Create One That Converts
A lead magnet is something valuable a person gets for free in exchange for their contact details: a checklist, a calculation, a trial or a consultation. A magnet that converts solves one narrow problem for your customer and leads naturally to a purchase.
Basics - Design & UX4 min
What Is a Moodboard and How to Make One for a Design Project
A moodboard is a collection of colors, fonts, images and references that sets a project's visual direction and helps you agree on the "feel" with a client before the first mockup is drawn.
Basics - Telegram & messengers4 min
How WhatsApp Business Platform Pricing Works
On the WhatsApp Business Platform you pay Meta for template messages you send, the price depends on the category (marketing, utility, authentication) and the recipient's country, replies inside the 24-hour customer service window are free, and a BSP adds its own fees on top.
Basics - E-commerce & CRM4 min
Shopify vs WooCommerce vs Custom Development for an Online Store
Shopify is the fastest way to launch but limits you to its rules and payment options, WooCommerce gives more control at the cost of maintenance, and custom development pays off when your processes, integrations or load no longer fit a ready platform.
Basics - Security4 min
What Is CSRF and How to Protect Your Web Application
CSRF is an attack where another site makes a user's browser send a request to your app along with their cookies. Defend with a CSRF token or Origin check on every state-changing request, and use SameSite cookies as an extra layer.
Basics - Databases & data3 min
What Is ClickHouse and Why Analytics Teams Use It
ClickHouse is an open-source columnar database designed for analytics: it scans and aggregates billions of rows quickly because it reads only the needed columns and compresses them well. It is a poor fit for frequent single-row updates and transactions, so it usually works next to PostgreSQL, not instead of it.
Basics - Hosting & cloud4 min
Wildcard vs Multi-Domain SSL: When You Need Each
A wildcard *.example.com covers any single-level subdomain but not the bare domain or nested names; a multi-domain SAN certificate covers an explicit list of names, even across domains. You can combine them, and the choice depends on how often new names appear and where the key lives.
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