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Innovators and insiders in commerce media

Colosseum Strategy is powered by four principals and a cadre of other professionals who bring specialized expertise to engagements as needed.

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Keith Bryan
Founder / CEO

Keith Bryan founded Colosseum Strategy in fall 2023 after nearly 20 years at Best Buy, a tenure that culminated in serving as president of Best Buy Ads, Media & CRM. Keith launched the Best Buy Media Network in 2010 — the forerunner to Best Buy Ads — and led all media strategy and buying, including the transformation to digital media.

The integrated model Keith engineered later came to be recognized as the future for retailers and their partners in media, marketing and technology. Under his leadership, Best Buy Ads evolved into the world’s largest specialty RMN. Keith joined Best Buy in 2004 after leadership roles in brand and product management.

Beyond guiding the market-leading retailer into retail media, Keith led a multi-billion-dollar computing merchant team, launched and scaled the flagship Apple store-within-a-store at Best Buy, and transformed marketing, media, and AdTech from analog to digital. He also led all customer membership offerings, including the My Best Buy loyalty program and Best Buy credit card portfolio. Before beginning his marketing and media career, Keith was a corporate attorney and holds degrees from Duke (MBA), Emory (JD) and the University of Memphis (BA).

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Yara Daher
Co-founder and Partner

Yara Daher is a retail media network pioneer, having shaped some of the industry’s earliest RMN successes while at HookLogic (acquired by Criteo).

Based in London, Yara joined HookLogic in 2014 and was instrumental in developing and launching RMNs for Walmart, Target, Best Buy and other major retailers. She later became head of retail partnerships in the U.S. at Criteo and led retail media for the company in Brazil.

More recently, Yara guided a portfolio of European startups in retail media, including the launches of MikMak and Symbiosys. Currently, Yara leads the Retail Media Standards Committee for the IAB in Europe, the Middle East and Africa. She earned a B.A. degree from the University of Southern California and an MBA from Columbia University in New York.

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Andrew Lipsman
Founding Advisor & Strategist

Andrew Lipsman is a familiar thought leader to those who follow digital media, advertising and the commerce ecosystem. Currently an independent analyst and consultant, Andrew produces industry research that gets wide coverage; he’s also sought for commentary on the changing landscape of retail and commerce media, which he is known for anointing as “digital advertising’s third big wave.”

As retail media networks began to gain traction in the late 2010s, Andrew’s reports on the paradigm shift defined the contours of the sector – and predicted, with great accuracy, what was to come. The first such report, “Retail Media Networks 2019,” popularized the industry-accepted nomenclature while detailing the trend’s evolution into upper-funnel formats like streaming TV and in-store retail media.

In the following years, he published seminal retail media reports including “Amazon Advertising 2021,” “Retail Media Networks Perception Benchmark 2022” and “In-Store Retail Media 2023.” Andrew is also a frequent presenter at industry conferences including The NRF Big Show, Shoptalk, Groceryshop, RMN Ascendant and the Retail Innovation Conference.

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Daniel Knapp
Founding Advisor & Data Architect

Daniel Knapp has been building bridges between analysis and application in digital advertising and media since 2007.

As Chief Economist at IAB Europe, the digital advertising trade body, he is a widely regarded authority on market insights and forecasts from retail media to the wider advertising ecosystem. His models and presentations on retail media have become the de facto source of truth for the industry in Europe and the Middle East.

Having founded a programmatic advertising agency and a data science firm specialising in programmatic supply chain analysis, he has built first-in-market tools and methods for advertising buyers and sellers to leverage insights to build and optimise winning monetization strategies.

Daniel spent 11 years IHS Markit, latterly as Executive Director in the Telecoms, Media and Technology practice, leading a team of 60 analysts and consultants. His clients have included media agencies, broadcasters, ad tech firms, retailers, consumer electronics companies and telcos, as well as trade associations, regulators and major investment firms. Bridging business and policy, Daniel was associated expert on media and AI at the European Commission. Daniel received his PhD from the London School of Economics (LSE)

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