Blog · notes from practice

What we learned building fast stores.

Technical articles on headless builds, site speed, Google Shopping feeds and Google Ads for e-commerce.

Jun 10, 2026

Google Shopping Is Coming to Serbia — What We Know, What It Costs and How to Prepare

Google is expanding Shopping ads to Serbia. What it means for your store, what it costs, what Merchant Center is and why merchants who prepare before launch gain the most.

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Jun 5, 2026

How to Start an Online Store in Serbia in 2026 — Company, Fiscalization, Payments and Platform

Do you need a registered company, what is e-fiscalization, how to accept cards and which platform to choose. A practical guide through every question future online sellers actually ask — without legal jargon.

May 30, 2026

Dropshipping in 2026: Last Chance or Money Down the Drain?

Dropshipping is still sold as an easy path to passive income. An honest, hype-free look: what dropshipping is, whether it still works in 2026, why most stores fail, and where the serious ones separate from those who burn cash.

May 25, 2026

What Is Headless Commerce — and When Your Store Actually Needs It

Headless commerce is a term increasingly slipped into agency proposals, but rarely explained. An honest guide: what headless is, why it's faster, what it costs, and when it makes NO sense to go headless.

May 20, 2026

Google Tag Manager for E-commerce: Why You Can't Measure Real Revenue Without It

Google Tag Manager is the tool everyone mentions and few set up correctly. What GTM is, how it differs from Google Analytics, how to set up conversion tracking for a store, and which mistakes quietly corrupt your numbers.

May 15, 2026

Site Speed and Core Web Vitals: Why a Slow Site Raises CPC and Cuts ROAS

A slow site doesn’t just lose buyers — it raises your Google Ads click cost through Quality Score. A guide to LCP, INP and CLS, why caching has a ceiling, and how headless breaks it.

May 10, 2026

GA4 for E-commerce: How to Measure Real Revenue from Google Ads

Most stores look at sessions, not revenue. A practical guide to GA4 e-commerce events, purchase tracking, linking with Google Ads, and the common mistakes that fake your ROAS.

May 5, 2026

Why Feed Quality Matters More in 2026 Than Ever Before

Google AI Max is changing the rules. The 'set your bid and wait' approach no longer works. What you need to know about your feed before spending another euro.

May 4, 2026

How Shopping feed optimization raised ROAS from 2.1x to 3.4x in 60 days

Systemic Google Shopping feed optimization: 62% ROAS increase in 60 days without increasing budget. What was changed and why it works.

May 3, 2026

Shopify Merchant Center setup: 12 mistakes almost everyone makes

12 common Google Merchant Center mistakes for Shopify merchants — disapprovals, low ROAS, and invisible products. How to fix them step by step.

May 3, 2026

State of E-commerce in 2026: 14 companies under the magnifying glass

Internal audit of 14 e-commerce Google Shopping feeds. What most do poorly, what a few do brilliantly, and where the real competitive advantage lies.

May 2, 2026

Performance Max vs Standard Shopping in 2026: When to Use Which

A complete comparison of Performance Max and Standard Shopping campaigns, a 70/30 budget split example, and a guide on when to use which in 2026.

May 2, 2026

GTIN and Brand: Two Attributes That Change ROAS

A small trick that in practice delivers 20–30% lower CPC. Why most catalogs have GTIN and brand incorrectly filled — and how to fix it.

May 1, 2026

Feed Completeness Score: How We Measure It and Why It Matters

Feed Completeness Score is an internal 0–100 metric that doesn't exist anywhere in the Google panel — but should. We explain how we calculate it, what it measures, and why it's a better predictor of ROAS than any Google indicator.

May 1, 2026

The Low CPC Myth: Why You Don't Need a Cheap Click

Most e-commerce owners look at CPC as the primary KPI. Wrong. We explain why a low CPC can destroy a campaign and which metrics to actually measure instead.

Apr 30, 2026

Feed Anatomy: 47 Attributes Google Expects

Technical guide through Google Merchant Center spec. What is required, what is recommended, and what gives you an AI Max auction advantage. 47 attributes.

Apr 29, 2026

AI Max Readiness: Is Your Feed Ready for Conversational Shopping

Google expanded AI Max to Shopping campaigns in April 2026. Learn which feed attributes you need and how to prepare your Merchant Center account.