Bing integrates with AMP and serves pages from their own AMP cache as well. Maybe DuckDuckGo doesn't, but that's on them. Your content is absolutely not at the

Bing integrates with AMP and serves pages from their own AMP cache as well. Maybe DuckDuckGo doesn't, but that's on them. Your content is absolutely not at the mercy of the one search engine unless you decide G is the only search engine that exists. The search engine does serve your page from a CDN (for free, by the way) that they own, but don't forget it's their perogative to even rank you at all. They are a private company, not a public utility.