Prepared Remarks:

Operator

Ladies and gentlemen, thank you for standing by, and welcome to the first quarter 2022 Roku earnings conference call. I would now like to hand the conference over to your host, Conrad Grodd, vice president of investor relations. Please go ahead.

Conrad Grodd -- Vice President of Investor Relations

Thank you, operator. Good afternoon, and welcome to Roku's first quarter 2022 earnings call. I'm joined today by Anthony Wood, Roku's founder and CEO; Steve Louden, our CFO; and Scott Rosenberg, senior vice president, general manager of our platform business, who will be available for Q&A. Full details of our results and additional management commentary are available in our shareholder letter, which can be found on our Investor Relations website at roku.com/investor.

Our comments and responses to your questions on this call reflect management's views as of today only, and we disclaim any obligation to update this information. On this call, we'll make forward-looking statements, which are predictions, projections, or other statements about future events, such as statements regarding our financial outlook, our investments, future market conditions, and macro environment headwinds, such as global supply chain disruptions, inflationary pressures, and geopolitical conflict. These statements are based on our current expectations, forecasts, and assumptions and involve risks and uncertainties. Please refer to our shareholder letter and our periodic SEC filings for information on factors that could cause our actual results to differ materially from these forward-looking statements.

We'll also discuss certain non-GAAP financial measures on today's call. Reconciliations to the most comparable GAAP financial measures are provided in our shareholder letter. Finally, unless otherwise stated, all comparisons on this call will be against our results for the comparable period of 2021. Now I'd like to hand the call over to Anthony.

Anthony Wood -- Founder and Chief Executive Officer

Roku had a solid first quarter with Platform revenue up 39% year over year, driven by higher content distribution and advertising revenue. This financial performance and our continued growth, even in a challenging operating environment, validates the strength of our business model. From day one, the Roku platform has been built to operate at the center of TV streaming, meeting the needs of each participant in the ecosystem. For consumers, we provide an excellent experience with trusted discovery tools that allow them to find and watch content the way they prefer, whether that's via the ad-supported or subscription services.