
GA4 Cross-Domain and Subdomain Tracking: Setup, GTM, _gl and Fixes (2026)
Set up GA4 cross-domain and subdomain tracking step by step: admin, GTM, gtag.js linker, _gl, testing and fixes.

We put AI agents to work across your sales, marketing and operations, built, shipped and measured on revenue.

“We harness your data, understand your audience, and turn every channel into measurable revenue. The best part? We execute, too.”

80+Projects Delivered
95%Client Retention
10+Years of Experience
Partner with a consultancy that measures itself on your return.
SEO, Google Ads and paid social, managed against cost per acquisition rather than clicks.
CRM pipelines, lead scoring and automated nurture journeys that follow up for you.
We modernize your stack, data and processes so marketing and operations run on one system.
Product managementChannel mix, positioning and a 90-day roadmap tied to your revenue targets.
A blog post and a web app run the same loop: PRDs, designs and data in, a plan you approve first, then agents build and checks run.
Agents read your PRDs, design files and data with RAG, act through MCP servers and are scored by evals. Nothing is built until a person approves the plan.
Brand voice, past posts and live search data are retrieved, so the brief starts from what you already know.
Pick an output. The loop stays the same.
Engagements measured by the numbers our clients report to their boards.

About 8,000 words of English website copy for a luxury Bodrum resort, localised into Turkish, German and Russian in 28 working days.

A Bodrum theme park moved from Wix to Odoo with online ticketing and an agency portal: €150K in online sales in its first season.

A WordPress site and a WooCommerce shop merged into one Shopify store with no traffic loss; half of online revenue now starts with Google.

Rebrand, replatform, SEO, Google Ads and CRM, run as one project for a clinic in Antalya.
Working with Semroi has been an exceptional experience.
We collaborated with them both on our website project and on content production, and throughout the process their team has been nothing but supportive. They are solution-oriented, creative, and dynamic, always bringing fresh ideas to the table.


Notes from the work, with the data behind it.

Set up GA4 cross-domain and subdomain tracking step by step: admin, GTM, gtag.js linker, _gl, testing and fixes.

What is GEO and how do you do it? GEO vs. SEO, GEO-friendly writing, technical checks, measurement and a 30-day plan.

RAG LLM improves accuracy by retrieving external data in real time, reducing hallucinations and enabling more factual, context-aware AI responses.

Set up GA4 cross-domain and subdomain tracking step by step: admin, GTM, gtag.js linker, _gl, testing and fixes.