https://arstechnica.com/information-technology/2022/07/microsoft-wins-deal-to-serve-ads-on-netflix-edging-out-comcast-and-google/

Netflix has hired Microsoft to provide the advertising technology for the streaming service's planned ad-supported tier, the companies announced Wednesday. Comcast's NBCUniversal subsidiary and Google were reportedly "top contenders" to serve ads on Netflix before Microsoft won the contract.

Microsoft will be the "global advertising technology and sales partner" for the "new lower priced ad-supported subscription plan," Netflix said Wednesday.