Microsoft has announced that paid plans are now available for the Bing Search APIs that are part of Microsoft Cognitive Services. The suite of Bing Search APIs that can now be purchased includes Bing Web Search API, Bing Image Search API, Bing Video Search API, and Bing News Search API.
Google announced that on April 1, Google Ads API will stop creation of App engagement campaigns for any app in a prohibited category. As of now, developers can create App engagement campaigns for apps in any category. The only current limitation is that prohibited category apps cannot serve ads.