Oleg Shlyamovych

CEO & Co-Founder, CAS.AI — Mobile Ad Monetization & Game Publishing

“Building the independent ad mediation platform for 5,000+ apps worldwide”

About

Oleg Shlyamovych is the CEO and co-founder of CAS.AI, a mobile ad mediation and game publishing platform trusted by 5,000+ apps worldwide. With over 9 years of experience in mobile game development and ad monetization, Oleg has overseen the growth of CAS from a kids’ games studio (PSV Games, founded 2014) into a global publishing and mediation platform processing 1 billion+ monthly ad impressions.

Under his leadership, CAS.AI has published 200+ games with 5 billion+ total downloads, built an independent ad mediation SDK supporting 20+ networks and 150+ DSPs, and developed a publishing model that invests up to $1M/month in user acquisition. The company operates offices in Berlin, Kyiv, Dubai, Limassol, and Krakow with a team of 150+ professionals.

Oleg specializes in ad monetization strategy, hybrid bidding (waterfall + RTB), impression-level revenue data (ILRD), ROAS optimization, and data-driven game scaling. His practical approach combines deep technical knowledge with hands-on experience managing a portfolio of hundreds of live titles across every genre.

Oleg regularly speaks at international game industry events including White Nights Berlin, Games Gathering Kyiv, Google AdMob Summit Dubai, and Talents in Games. He shares insights on mobile monetization trends, UA economics, and the evolving ad tech landscape.

Areas of Expertise

Mobile App Monetization Ad Mediation & RTB Mobile Game Publishing User Acquisition & ROAS Hybrid Monetization (IAP + IAA) Impression-Level Revenue Data (ILRD) SDK Architecture Game Analytics & KPIs

Speaking & Events

App-ads.txt: Don't Add This — How Game Devs Lose eCPM and Traffic CAS.AI Channel — 2026
Why 99% of Mobile Games Fail to Scale After Launch CAS.AI Channel — 2026
Google AdMob Summit Dubai — 2025
10 Awesome Hacks of Ads Monetisation Digital Dragons Conference — Krakow, Poland — 2022
Mobile Games for Kids: 2M Daily Players & Ad Mediation Tochka G — IT Business Podcast — 2022
White Nights Berlin — 2022
Talents in Games Online — 2022
Games Gathering Kyiv — 2021
Ad Mediation in Mobile Apps ASO Secrets Conference — 2020

Articles by Oleg Shlyamovych

AdTech & Monetization

What Is eCPM? Formula, Benchmarks & How to Increase It │CAS.AI

If you're a publisher, eCPM (effective cost per mille) is the revenue you earn for every 1,000 ad impressions. It's calculated with a simple formula: divide total ad revenue by total impressions, then multiply by 1,000. Unlike CPM, a fixed price that advertisers agree to upfront, eCPM reflects what you actually earned after accounting for fill rate, bids, and everything else. But the number alone means little without context. A $1.50 eCPM for a banner in Latin America is not the same as a $1.50 eCPM for rewarded video in the US. Format, geography, platform, and seasonality all move the needle. For publishers, the most reliable way to push eCPM higher? Competition. The more networks bidding on each impression in real time, the better your realized revenue. Publishers who switch to independent mediation typically see revenue per user jump 1.5–2x. That's not theory; that's what the data shows.

January 18, 2026 18 min read

Publishing

Mobile Game Publishing: The Growth Workflow We Use at CAS.AI

Mobile game publishing at CAS.AI is built for scaling mobile games with a data-driven system: CPI→ROAS UA, hybrid monetization (bidding + waterfall), ASO A/B tests, and creative iteration. Learn the baseline metrics we require and the workflow we use to scale profitably into Tier-1 geos.

December 19, 2025 5 min read

Concept visual supporting the topic of staged rollout retention distortion and accurate cohort analysis in mobile app updates

AdTech & Monetization

The Hidden Retention Trap in Staged Rollouts — And How to Fix It

Staged rollouts can distort retention and produce misleading cohort data. Here’s how version mixing happens and how to protect your metrics from false signals.

December 5, 2025 4 min read

Publishing

Mobile Game Publishing Behind the Scenes: How Growth Really Happens

A behind-the-scenes look at mobile game publishing and the real levers of growth. Four case studies show how CAS.AI scales indie games with data-driven strategies.

December 3, 2025 4 min read

Publishing

CAS.AI Method in Action: Reliable, Scalable Mobile Publishing

CAS.AI’s method for mobile publishing and scaling apps: clear KPIs, small UA tests, ILD-driven monetization, and Tenjin analytics. Learn how we validate D0/D7, tune ad mix, and scale reliably across geos and channels.

October 17, 2025 6 min read

Technical isometric diagram for Flutter mobile ad mediation, illustrating efficient ad monetization infrastructure for cross-platform app developers.

AdTech & Monetization

Ad Mediation for Flutter

Maximizing revenue in the competitive mobile landscape requires more than just standard ad placements; it demands a strategic approach to monetization. For Flutter developers, ad mediation serves as the ultimate engine for growth. By implementing a robust mediation platform, you can force top-tier ad networks to compete for your inventory in real-time, significantly driving up your average eCPM. This guide explores the technical and strategic advantages of moving beyond single-network setups. You will learn the nuances of integrating industry-leading networks and the transformative power of programmatic bidding. Unlike traditional waterfalls, programmatic bidding ensures that every impression is sold to the highest bidder at the exact moment of the request, eliminating manual overhead and maximizing fill rates. Whether you are launching a new utility app or scaling a global gaming title, mastering these mediation techniques is the key to unlocking sustainable, scalable earnings and ensuring your Flutter project achieves its full financial potential.

July 8, 2025 5 min read

Technical isometric diagram for Godot Engine mobile ad mediation, illustrating the network infrastructure to optimize and boost mobile game income.

AdTech & Monetization

Ad Mediation for Godot

Ad mediation is the essential middleman between your mobile game and multiple ad networks, ensuring you never leave money on the table. Instead of relying on a single provider, mediation triggers a real-time auction for every ad slot, allowing the highest bidder to win the impression. For Godot developers, this technology is a game-changer. By implementing a mediation layer, you can navigate the engine's unique SDK landscape while accessing high-paying formats like rewarded videos and interstitials. Platforms like CAS.ai streamline this process by connecting your project to over 20 networks and 150 DSPs through a single integration. This setup eliminates the "empty slot" problem, stabilizes revenue during seasonal shifts, and provides unified analytics. Whether you are building hyper-casual titles or complex midcore games, ad mediation can boost your total revenue by 30% to 60%, making it a non-negotiable tool for any serious mobile developer.

June 8, 2025 6 min read

obile app ad mediation flow chart illustrating how to optimize and boost app monetization

AdTech & Monetization

Mobile Game Monetization: The Complete Guide

For any mobile game publisher, success isn't just about the build; it’s about the infrastructure behind it. Whether you are an indie developer or an established indie game publisher, treating monetization as an afterthought is a costly mistake. Mobile game publishing has evolved, and manual setups are now a revenue leak that a casual game publisher simply cannot afford. To become the best casual game publisher in your niche, you must leverage automation. This is especially true for a hyper casual game publisher, where thin retention curves mean every impression counts. By choosing a robust game publishing platform like CAS.AI, you streamline your workflow from day one. Don't wait until launch to fix your strategy. Master indie game publishing by integrating a mediation layer before you publish your game on Google Play, ensuring you squeeze maximum value from your global audience while focusing on the gameplay players love.

May 13, 2025 16 min read

Technical isometric diagram for React Native mobile ad mediation, illustrating smart ad integration infrastructure to optimize cross-platform app revenue.

AdTech & Monetization

Ad Mediation in React Native

Ad mediation is the essential "go-between" for React Native developers looking to maximize app revenue. Rather than relying on a single ad network, mediation creates a real-time auction where multiple networks compete for your ad slots. This ecosystem ensures that every impression—whether it’s a banner, interstitial, or high-value rewarded video—is sold to the highest bidder. The transition from traditional "waterfall" models to programmatic bidding has revolutionized monetization, often increasing earnings by 10% to 30%. By integrating a single mediation SDK, developers can access premium demand from giants like AdMob, AppLovin, and CAS.ai without the engineering overhead of managing dozens of individual plugins. Beyond higher eCPMs, mediation offers unified analytics, improved fill rates in secondary markets, and built-in A/B testing. For any React Native developer aiming for professional-scale growth, a robust mediation strategy is no longer optional. It is the foundation of a profitable mobile business.

May 8, 2025 8 min read

Network node diagram illustrating mobile header bidding mechanics with a central publisher app connecting to multiple programmatic demand sources.

AdTech & Monetization Guide

The Complete Header Bidding Guide

Traditional waterfall mediation is failing modern publishers. By ranking ad networks in a fixed, predetermined order based on historical data, the waterfall model creates a structural revenue leak where higher-paying bidders are often ignored simply because of their rank. Header bidding solves this by flipping the auction model entirely, allowing all demand partners to bid simultaneously before the ad server is even called. Whether you are a hyper-casual game developer or a cross-platform creator using Flutter or Unity, understanding the technical nuances between client-side and server-side auctions is critical. While client-side offers transparency, server-side bidding is often preferred for mobile apps to reduce latency. By integrating header bidding into your ad mediation platform, you move away from managed queues toward a live, competitive market, ensuring you capture the true market value of every single impression.

May 1, 2025 12 min read