Mikalai Sasau
Mikalai Sasau is CEO of Marketlab Analytics and a metricfixer author focused on web analytics, conversion tracking, PPC, technical diagnostics and AI workflows.
Mikalai Sasau is CEO of Marketlab Analytics and one of the authors and technical leads behind metricfixer. Mikalai’s work focuses on web analytics, conversion tracking, PPC measurement, analytics audits, end-to-end measurement, advertising effectiveness, and professional AI-assisted workflows for marketing and analytics teams.
Editorial focus: practical measurement problems at the point where analytics, advertising platforms, websites, consent systems, and business data meet. The goal is to explain not only what a platform reports, but what actually happens between a user action, a tracking request, platform processing, and the final business result.
About Mikalai Sasau
Mikalai’s professional background combines entrepreneurship, media management, sales-driven businesses, web development, digital advertising, and analytics. The career started in 1999 in Minsk while Mikalai was studying at Belarusian National Technical University, first as a manager and producer at the Radio BA International production center and then through an independent concert and event business.
From 2001 to 2005, Mikalai was a co-founder and executive director of a printing company in Minsk. From 2005 to 2010, Mikalai ran a real-estate business focused on premium country properties, followed by work from 2010 to 2012 as a residential real-estate broker and expert with Grinwich Group, Tekta, and Domostroy in Moscow. From 2012 to 2014, Mikalai served as director of RBK Belarus.
From web development to digital analytics
In 2014, Mikalai founded Marketlab Media, a Minsk-based company focused on website development for small businesses. From 2015 to 2021, Mikalai led Marketlab Group and specialized in web analytics and PPC advertising. This period established the measurement and advertising focus that later became central to Marketlab Analytics and metricfixer.
In 2021, Mikalai moved to the European Union and expanded the work to the international market. Since 2022, Mikalai has served as CEO of Marketlab Analytics and as one of the authors and technical leaders of metricfixer.
Areas of expertise
- Web analytics and measurement architecture: designing and auditing how websites, analytics platforms, advertising systems, and business data exchange measurement signals.
- Conversion tracking and attribution: diagnosing missing, duplicated, delayed, or misattributed conversions across browser, server, advertising, analytics, and CRM layers.
- PPC measurement and advertising effectiveness: evaluating campaign performance through reliable conversion data rather than platform metrics in isolation.
- Analytics and end-to-end measurement audits: finding breaks between acquisition, on-site behavior, leads, CRM stages, purchases, and reporting.
- Technical implementation and diagnostics: translating tracking and advertising requirements into workflows that developers, analysts, and marketing teams can test and maintain.
- AI-assisted professional workflows: developing metricfixer Special Workflows and pilot analytical products that use AI to support audits, diagnostics, measurement setup, and advertising-performance analysis.
Editorial work at metricfixer
At metricfixer, Mikalai writes practical research, implementation guides, and diagnostic frameworks for analysts, performance marketers, developers, and business owners. The publication work covers topics such as GA4 and Google Tag Manager troubleshooting, Google Ads measurement, Meta advertising and conversion tracking, consent implementation, CRM reconciliation, and technical SEO where measurement and website architecture intersect.
The editorial approach is deliberately system-oriented. Instead of treating a green tag status, a platform conversion, or a dashboard number as final proof, the analysis follows the full chain of evidence: browser behavior, network requests, tag execution, platform processing, attribution, CRM data, and reporting. This makes the material useful both for specialists debugging complex implementations and for readers who need to understand why advertising and analytics systems sometimes tell different stories.
Current focus
Mikalai currently leads development work around metricfixer Special Workflows and pilot projects in advertising-efficiency management, analytics auditing and implementation, end-to-end measurement, and professional analytical products built with AI. The objective is to turn recurring technical and measurement problems into repeatable workflows that can be checked, explained, and improved in production environments.
Publications by Mikalai Sasau
52 publications
Aug 26, 2026
OpenAI Ads in Europe: Geo-Targeting, the 31-Country Rollout, and What Advertisers Can Use
OpenAI has expanded ChatGPT Ads inventory across 31 European markets, but inventory, self-service access, geo-targeting, personalization, billing, and measurement are rolling out on different timelines. This guide explains the full country list and a practical launch model for European advertisers.
Aug 24, 2026
How to Improve Google Maps Visibility: A Practical Google Business Profile Guide
Google Maps visibility is not controlled by one hidden setting. This practical guide shows local businesses how to improve relevance, prominence, and conversion through accurate profile data, categories, services, reviews, local landing pages, links, photos, and reliable measurement.
Aug 22, 2026
California CIPA and Website Tracking in 2026: Consent, GPC, and the “Do Not Sell or Share” Rule
California website privacy requires teams to separate CIPA interception risk from CCPA opt-out duties. This guide explains prior-consent blocking, Global Privacy Control, the “Do Not Sell or Share” control, pending SB 690, and a practical Cookiebot/Usercentrics setup.
Aug 21, 2026
How to Preserve UTM Parameters, GCLID, and User Identifiers Across Domains and External Systems
A practical architecture guide for preserving campaign attribution and measurement continuity across subdomains, separate checkout domains, booking platforms, iframes, redirects, and external APIs.
Aug 19, 2026
How to Use robots.txt for SEO Without Breaking Google Ads, Merchant Center, or Meta Ads
A practical guide to robots.txt, canonical tags, noindex, feed URLs, Googlebot, StoreBot, mobile AdsBot, and Meta crawlers—so duplicate-control work does not block paid landing pages or product catalogs.
Aug 18, 2026
Why a Tag Fires in GTM Preview Mode but Not for Real Visitors
A network-first diagnostic workflow for finding why a Google Tag Manager tag fires in Preview Mode but fails for ordinary visitors, covering live versions, debug side effects, forms, consent, cookies, CSP, blockers, navigation timing, and platform processing.
Aug 15, 2026
Google Ads Language Targeting Is Changing for Search and Performance Max
In late September 2026, Google Ads will stop using campaign-level language targeting for Search and the Search inventory inside Performance Max. This review explains the new matching logic, performance risks, API impact, and the audit advertisers should complete before rollout.
Aug 15, 2026
Consent Mode v2 After Page Load: Will Blocked Tags Fire When Consent Is Granted?
A practical Cookiebot and GTM guide to what happens when a visitor grants consent after Container Loaded, including default and update states, Basic vs Advanced mode, platform-specific tag behavior, persistence, and reliable testing.
Aug 9, 2026
GA4 Medium Values Explained: AI Assistant, Native Traffic Classification, and Default Channel Rules
Google Analytics now recognizes AI assistant referrals with the native ai-assistant medium. This guide explains GA4 medium values, default channel rules, UTM behavior, reporting scopes, and the limits of AI referral measurement.
Aug 8, 2026
How to Build a Technically Correct 404 Page: SEO, Analytics, UX, and Application Architecture
A practical reference architecture for true 404 responses, helpful error pages, selective GA4/GTM measurement, bot-resistant logging, and correct behavior across SSR, SPAs, APIs, CDNs, and server frameworks.
Aug 7, 2026
Meta Pixel and Conversions API Event Lifecycle: From Browser Trigger to Campaign Reporting
Follow a Meta conversion event from browser or server trigger through receipt, matching, deduplication, custom conversion rules, campaign optimization, and Ads Manager reporting. The guide explains what Pixel Helper, Test Events, Events Manager, and the Results column actually prove.
Aug 6, 2026
Why Meta Ads Shows More Leads Than WhatsApp or Your CRM
Meta Ads can report more leads than WhatsApp or your CRM because the systems count different things. This guide separates clicks, conversation starts, new contacts, repeat inquiries, attributed contacts, and qualified leads—and shows how to reconcile them.
Guides by Mikalai Sasau
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