In CS, conference papers act much like journal papers (though often quite a bit shorter). Unlike journal papers, a talk or poster (by one of the authors) is also required to be presented at the conference in order to have the paper published. Though there are exceptions, the majority of these conferences are published in either ACM or IEEE libraries.
The Best Paper Award is typically some combination of a decision by the Program Committee, aggregated votes by attendees of the conference, and input from the paper reviewers who originally peer-reviewed the work.
There isn't a single metric for the award, and it can be quite subjective: sometimes it is an innovate topic, sometimes it is simply an interesting perspective, sometimes it is a well-executed presentation (even if the research itself wasn't all that interesting), sometimes it is because the authors used a difficult-to-acquire or real-world data set (internal Google or Microsoft data, game data directly from Blizzard), sometimes it is because of a challenging participant base (for example, interviewing minorities in elementary schools or a longitudinal study tracking participants over a decade), and sometimes it is simply excellent experimental design and statistical analysis.
The Best Paper Award is typically some combination of a decision by the Program Committee, aggregated votes by attendees of the conference, and input from the paper reviewers who originally peer-reviewed the work.
There isn't a single metric for the award, and it can be quite subjective: sometimes it is an innovate topic, sometimes it is simply an interesting perspective, sometimes it is a well-executed presentation (even if the research itself wasn't all that interesting), sometimes it is because the authors used a difficult-to-acquire or real-world data set (internal Google or Microsoft data, game data directly from Blizzard), sometimes it is because of a challenging participant base (for example, interviewing minorities in elementary schools or a longitudinal study tracking participants over a decade), and sometimes it is simply excellent experimental design and statistical analysis.