This depends a ton on if we're talking about a company's own website's job listings or if it's on some dedicated job listing site.
Company's own website job listings are likely actually in an applicant tracking system (ATS) like Greenhouse or Ashby because they need to manage the pipeline, not just list the job.
Company's own website job listings are likely actually in an applicant tracking system (ATS) like Greenhouse or Ashby because they need to manage the pipeline, not just list the job.