Before the Applicant Tracking Systems (ATSs) entered the scene, recruiters kept candidates’ applications in filing cabinets or stacked up in piles on their desks. ATSs were introduced to the market in the 90’s and even though the first versions were very basic, it symbolised a turning point in the management of the recruitment process across the companies that integrated this solution into their processes. Mainly, because it allowed recruiters to keep a track record of the applications and better organise the information regarding each applicant.
More information: https://www.skeeled.com/blog/2018/07/05/ats-everything-you-need-to-know-about-applicant-tracking-systems/