Aware that potential customers often search for “what’s an alternative to (fill in the blank)?”, ZenDesk built a mini site at the domain ZenDeskAlternative.com. Utilizing good SEO, they’re able to get near the top of the search results page so they have a second chance to land customers who might otherwise choose some other provider.
(Tip to ZenDesk: Congratulations on this guerilla marketing tactic but you should also register and build-out AlternativeToZendDesk.com because you show up nowhere on the search results page for that phrase.)

Jumping in Front of Customers Who Are Searching for Your Competitors – ZenDesk
Source:https://optinmonster.com/content-marketing-examples/