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Sempai, winner of our Product & Innovation Award, discusses success with Microsoft Advertising

May 12, 2025
A person with curly hair wearing a denim jacket blows a handful of confetti toward the camera on a city street, with the colorful particles suspended in the air and blurred pedestrians in the background.

The Microsoft Advertising Partner Program Team had the opportunity to speak with Sempai. Winner of our Product & Innovation award presented to the Partner who adopted a new feature or innovative strategy that delivered outstanding outcomes and value for their clients. 

Our judges were impressed by Sempai’s ability to bridge the gap between advanced technology and entrepreneurial dreams. Sempai empowers clients to engage confidently with digital marketing and delivers extraordinary results while simultaneously reducing cost and campaign setup time. Through the integration of advanced technology and user-friendly solutions, Sempai has made advertising accessible, efficient, and attainable for over 120 online stores. 

About Sempai

We are #sempaiteam, nice to meet you! Our agency - Sempai - offers a variety of services in the field of digital marketing. In 2021, we launched our first Microsoft Advertising campaign. Recently, we became the Microsoft Advertising Elite Partner, making us one of the few agencies in Central and Eastern Europe to achieve this status. Currently, #sempaiteam consists of approximately 150 members. Together, we form one of the largest digital marketing agencies in Poland. We share the same values. We celebrate our successes, but always strive for improvement. We are always transparent and never hide the mistakes in our teams - it’s ok, everyone makes them. But we don’t forget to learn from failures. We are good buddies who improve together and care for the friendly atmosphere. We believe that working in a positive environment is an essential part of life. 

Success with Microsoft Advertising

We entered Microsoft Advertising as an agency experienced in digital marketing. We were looking for a way to scale our clients' advertising budgets even further. Kris, our Head of Marketplace and Paid Ads, convinced us that Microsoft Advertising was the perfect solution. Shortly after, we started achieving outstanding results. 

You can already find one of our case studies on the Microsoft blog. If you’d like to discover how we achieved a 1316% ROAS and 100% overall higher revenues with Microsoft Advertising for the bookstore Gandalf - feel free to explore our story!

Their greatest accomplishment

Our greatest achievement? We believe it is still ahead of us! For now, we are incredibly proud of the results we achieve for our clients' campaigns. As an experienced company, we primarily work with medium and large e-commerce businesses. But what about smaller ones?

With them in mind, we developed Shopai—an AI-powered tool that automatically sets up and optimizes product campaigns across different platforms, including Microsoft Ads. All you need to do is create an account, upload your feed, set a budget, and leave the rest to the algorithm. We had the opportunity to present Shopai at the Microsoft Advertising Celebrated Partner contest and were honored to receive recognition. 

Looking ahead

We are excited to continue developing our tool and redefining quality through AI and, of course, Microsoft Ads! We’re always open to discussions and knowledge-sharing—so if you have any questions or want to get to know us better, feel free to reach out to Kris at krzysztof.janosiewicz@sempai.pl.

You can find more information about us on linkedin.com/company/sempai/ or www.sempai.agency.

Exceptional relationships

As Microsoft Partners - we have the fantastic opportunity to collaborate with amazing people. Speaking of which - we must emphasize the role of our best buddy at Microsoft - Daniel Trost. He has always been there to guide us through the next steps of our partnership and plan the future of our cooperation. Thank you, Daniel! 

We’ve had an opportunity to visit Microsoft multiple times! In the photo, alongside Daniel Trost and Mo Ode from Microsoft you can see our colleagues - Sebastian Suma - (CEO) and Krzysztof “Kris” Janosiewicz - (Head of Marketplace & Paid Ads at Sempai).

Daniel Trost, Mo Ode, Sebastian Suma, and Krzysztof “Kris” Janosiewicz.

About Microsoft Advertising Partner Celebration

The Microsoft Advertising Partner Celebration is a bi-annual event recognizing the exceptional and innovative work of our partners. Enrolled partners from around the world tell their story of growth, innovation, and excellence for a chance to become a Microsoft Advertising Celebrated Partner in one of three awards.

PARTNER GROWTH AWARD       

CULTURE AND COMMUNITY AWARD
 

PRODUCT AND INNOVATION AWARD

Not an enrolled partner? Don't wait — enroll in the Microsoft Advertising Partner Program now!

Find more information at https://microsoftadvertising.com/msftadspartnercelebration or by reaching out to partnerwithmsftads@microsoft.com.

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