Apple has a search engine? So they basically scrape the web themselves and serve the results via Spotlight & Siri, it just lacks a web frontend? Is there any ad

Apple has a search engine? So they basically scrape the web themselves and serve the results via Spotlight & Siri, it just lacks a web frontend? Is there any additional information on that? I haven't heard of a Apple crawler user agent yet, but I could've just missed that. I always thought they'd be using Bing or DDG for that data. If Apple wanted to go into the search engine business, I'd have expected them to just aquire DDG, tbh.