Google For Jobs is job search engine powered by Google. It indexes all links (from job boards and ATS's) for a specific job posting and puts them on a single job listing.
If you post a job opening on your ATS/career site, LinkedIn, and Glassdoor; instead of returning 3 different organic results (like Google used to) Google now returns1 result with 3 different buttons.
In a Ziprecruiter case study, after optimizing their job postings for Google For Jobs they saw:
Google requires specific schema markup in the HTML code of EVERY job post.
Finding, building, and implementing schema markup requires advanced knowledge of JSON, HTML, and Google's indexing tools.
Ongig allows you to make your job postings Google For Jobs-eligible without having to touch your HTML code (No developer needed).