[SahAssar]

Do you mean actual coded if statements as in actually human written code like

    if (question.match(/^what is (.*)/)) return wikipedia.search(question)

or something more automated?

[laidoffamazon]

Not like that, but once you get to first party Alexa Skill themselves there's a bunch of match rules that make up a big chunk of the traffic. Don't know exactly how much. The longtail is done through ML means.