What is ats

Last updated: April 1, 2026

Quick Answer: An Applicant Tracking System (ATS) is software that automates recruitment by managing job applications, filtering resumes, and organizing candidate information throughout the hiring pipeline.

Key Facts

What is an Applicant Tracking System?

An Applicant Tracking System (ATS) is specialized software designed to manage and automate the recruitment process. These systems have become essential tools in Human Resources departments, particularly in organizations that receive thousands of job applications. The primary function of an ATS is to collect, organize, and filter job applications before they reach human recruiters. Most modern ATS solutions are cloud-based, allowing recruiters and hiring managers to access candidate information from anywhere. The software serves as a centralized database where resumes, cover letters, interview notes, and communication history are stored and managed.

How ATS Works

When a candidate submits an application, the ATS automatically extracts information from their resume and supporting documents. The system uses keyword matching and predefined filters to evaluate applications against job requirements. Many ATS platforms use artificial intelligence and machine learning to score applications based on relevance. Resumes lacking required keywords or qualifications are often automatically filtered out before human review. The system categorizes candidates into different stages like "new applicants," "screened," "interview scheduled," and "hired." Recruiters can search the database using filters like location, experience level, education, and specific technical skills.

Key Features

ATS platforms typically include resume parsing, which automatically extracts relevant information from application documents. Interview scheduling automation sends calendar invitations to both candidates and hiring managers. Candidate relationship management features maintain communication history and enable personalized follow-ups. Analytics and reporting tools provide insights into recruitment metrics, time-to-hire, and cost-per-hire. Most systems integrate with job boards, LinkedIn, email, and other HR software. Advanced features include diversity tracking, interview video management, and predictive analytics for identifying top candidates.

Resume Optimization for ATS

To improve ATS compatibility, candidates should use standard fonts, simple formatting, and include relevant keywords from the job description. Avoiding graphics, tables, and unusual formatting increases the likelihood that the ATS can properly parse the resume. Including industry-specific terminology and skills matching the job posting significantly improves ATS scoring. Many jobseekers now strategically optimize resumes for ATS systems to avoid being filtered out before human review.

Related Questions

How do I make my resume ATS-friendly?

Use standard fonts like Arial or Calibri, avoid tables and graphics, include relevant keywords from the job posting, use standard section headings, and save as PDF or Word format. Keep formatting simple and clean to ensure proper parsing by automated systems.

What ATS system does my company use?

You can typically find this information in your company's HR documentation, job portal, or by asking your Human Resources department directly. Your company website's careers page may also indicate which ATS platform is used for applications.

Do all companies use ATS for hiring?

Most large and medium-sized companies use ATS systems, but many small businesses and startups may still use manual review processes. The use of ATS is becoming increasingly common across all company sizes due to the efficiency benefits and reduced hiring costs.

Sources

  1. Wikipedia - Applicant Tracking System CC-BY-SA-4.0
  2. SHRM Research - HR Technology and Recruitment SHRM