Applicant Tracking System (ATS)

What Is an Applicant Tracking System (ATS)? 

An Applicant Tracking System (ATS) is a piece of HR software that helps businesses manage and automate the recruitment process. From the moment a candidate applies for a role through to the point of hire, an ATS provides a centralised platform for storing applications, screening candidates, tracking progress through each stage, and communicating with applicants. It is used by HR teams, in house recruiters, and hiring managers across organisations of all sizes to bring structure, speed, and consistency to the hiring process. 

A Practical Guide to Applicant Tracking Systems (ATS)

Think of an ATS as a central filing system combined with a smart filtering tool. Before these systems existed, managing a recruitment campaign often meant handling CVs by email, keeping candidate information in spreadsheets, and manually tracking who had been contacted, interviewed, or rejected. As the volume of applications grew, this became increasingly difficult to manage reliably and consistently. 

An ATS replaces that manual process with a structured, searchable system. All applications arrive in one place, candidates are organised against the role they applied for, and each person’s progress through the process is tracked automatically as they move from stage to stage. 

A common misconception is that an ATS is designed primarily to reject candidates automatically. In reality, its purpose is to help recruiters manage volume efficiently, so that the most suitable candidates are identified quickly and the overall process is handled consistently and fairly. 

How an Applicant Tracking System Works

While different systems offer different features, the core process within most ATS platforms follows a similar pattern. 

• A vacancy is posted 
  The hiring team creates the role within the ATS, including the job description, required skills, and any qualifying questions. The ATS can typically push the listing to multiple job boards simultaneously, centralising applications from all sources into one system. 
• Applications come in 
  Candidates apply, either through the company’s own careers page, which connects directly to the ATS, or via external job boards. Their CVs and any supporting information are captured and stored centrally. 
• Screening takes place
  The ATS uses algorithms to scan and rank CVs based on keywords, qualifications, and experience relative to the role requirements. Applications that do not meet the minimum criteria can be automatically filtered. Those that do are ranked and presented to the recruiter for human review. 
• The process is tracked 
  As candidates move through interview stages, the ATS records their progress, stores notes and feedback from interviewers, and triggers automated communications to keep candidates informed at each step. 
• Data and reporting are generated 
  At any point, hiring managers and HR teams can access data on the volume of applications, where candidates are in the process, time to hire, and other recruitment metrics that help the business understand how the process is performing. 

Why an Applicant Tracking System Is Important 

An ATS delivers value across three areas: efficiency, consistency, and insight. 

1. Reduced time to hire 
   For businesses receiving large volumes of applications, manually reviewing every CV is both time-consuming and costly. An ATS automates the initial screening, meaning recruiters spend their time on candidates who are already a credible fit for the role rather than working through applications that do not meet the basic requirements. 
2. A consistent candidate experience 
   By automating candidate communications, including confirmation emails, interview invitations, and outcome notifications, an ATS ensures that every applicant receives a timely response. This matters for the employer’s reputation, particularly in competitive hiring markets where candidate experience influences whether strong applicants accept an offer. 
3. Centralised information 
   When multiple people are involved in a recruitment process, having all candidate information, notes, and decisions in a single shared system reduces the risk of miscommunication and ensures that no candidate is overlooked or assessed inconsistently. 
4. Recruitment insight 
   An ATS provides visibility into key recruitment metrics, from cost per hire to the performance of different job boards. This data helps businesses refine their recruitment strategy over time and identify where the process is working well and where it needs improvement. 

Applicant Tracking System (ATS) vs Manual Recruitment 

The alternative to an ATS is managing the recruitment process through a combination of email, shared folders, and spreadsheets. For very small businesses hiring infrequently, this can be workable. But as the volume of roles and applications increases, the limitations become apparent. 

Manual processes are difficult to maintain consistently. Different managers may handle communication differently, making the candidate experience uneven. Information is stored in multiple places, making it hard to get a clear picture of where each process stands at any given moment. 

An ATS addresses both of these issues. It standardises the process, centralises the data, and provides a single view of every active recruitment campaign, regardless of how many roles are open simultaneously. 

Common Questions About Applicant Tracking Systems 

• Does an ATS replace human recruiters? 
  No. An ATS is a tool to support recruiters, not replace them. It automates the administrative and logistical parts of the process, such as screening high volumes of CVs and sending candidate communications, so that human decision-makers can focus on the judgement calls: assessing candidates, conducting interviews, and making offers. The final hiring decision always remains with a person. 
• Is an ATS only useful for large organisations? 
  While larger organisations with significant hiring volumes gain the most immediate benefit, businesses of all sizes can benefit from the structure and consistency an ATS provides. Many systems are available as cloud based software with pricing models suited to smaller businesses, and even a growing business hiring for two or three roles at a time will find the centralisation and automation useful. 
• Does an ATS affect the candidate experience? 
  It can do, positively or negatively, depending on how it is configured and managed. A well-configured ATS speeds up communication, keeps candidates informed, and creates a smoother application journey. A poorly configured one can result in automated decisions that do not reflect a proper review of the application, or a frustrating process that deters strong candidates. The ATS is a tool. The experience it delivers reflects how it is set up and managed by the people using it. 

Applicant Tracking System (ATS) in Summary 

An Applicant Tracking System (ATS) is software that centralises and automates the recruitment process. It allows businesses to post vacancies, receive and screen applications, track candidate progress, and report on hiring activity, all from a single platform. 

For UK businesses looking to improve the speed, consistency, and quality of their recruitment, an ATS provides a practical foundation. It does not remove the human element from hiring. Instead, it removes the administrative burden that can otherwise prevent recruiters and hiring managers from focusing their energy on finding the right people.