What is an ATS? The complete guide to recruiting software
Definition, key features, when you need one, what it costs, and how to choose the best Applicant Tracking System for your company — written for European HR teams.
ATS definition
An Applicant Tracking System is a software application designed to centralise and automate recruiting. The base capabilities of a modern ATS are:
Application intake
- Job boards (LinkedIn, Monster, Indeed)
- Company career site
- Internal referrals
- Direct sourcing
Candidate data management
- Automatic CV parsing
- Kanban pipeline with stages
- Internal notes and collaboration
- Attachments and documents
Communication automation
- Application confirmations
- Interview reminders
- Motivated rejections
- Multi-channel (email/SMS/WhatsApp)
Reporting and KPIs
- Time-to-hire and cost-per-hire
- Source analysis
- Conversion funnel
- Customisable KPIs
When you need an ATS
Applications behave like emails: below a certain threshold you can manage everything by hand, above it you need a structure. The typical threshold is 50 applications per month. Below it a spreadsheet is enough. Above it, without an ATS you lose promising candidates to delayed responses, you accumulate potential GDPR violations (CVs kept for years with no legal basis) and it becomes impossible to measure the fundamental recruiting KPIs.
Staffing agencies and high-volume hiring companies (logistics, hospitality, retail, manufacturing, large-format retail) handle volumes between 1,000 and 25,000 applications per month. For them an ATS is not a nice-to-have, it is the operating system of the business.
Classic ATS vs AI-powered ATS
Historically an ATS has been a tracking system, that is a state-recording system. The candidate-to-role matching part was keyword-based: if the CV contained the word 'Java' the candidate was considered a Java developer. A fragile system and the source of huge false negatives (a senior candidate with JEE experience would be filtered out).
AI-powered ATS go beyond keyword matching by using skill ontologies like ESCO, the European standard. The semantic distance between 'Java' and 'JEE', or 'tester' and 'QA engineer', is computed on the ontology hierarchy rather than lexical identity.
Typical AI capabilities beyond matching are: Voice-to-CV (generating structured CVs from voice messages, particularly useful in blue-collar verticals), automated screening with scoring, personalised interview-question generation, continuous bias monitoring.
Compliance: GDPR and EU AI Act
An ATS operating in Europe must comply with GDPR (Regulation EU 2016/679) and the EU AI Act (Regulation EU 2024/1689). GDPR requires a clear lawful basis for processing, limited retention, candidate rights (access, rectification, erasure, portability, objection, human review of automated decisions). The EU AI Act classifies AI recruiting systems as 'high-risk' and mandates risk management, training-data quality, traceability, human oversight and bias monitoring.
How much does an ATS cost
Pricing depends on the vendor commercial model:
Per processed candidate
- Pay-per-use, from €10-15/cand
- Suited to variable volumes
- No fixed commitment
- Scalable model
Per active position
- Per-job-slot pricing
- From $150-200/month per slot
- Typical US model
- E.g. Workable, Greenhouse
Flat subscription
- €1,500-2,500/month (SMB)
- €5,000-15,000/month (enterprise)
- Volume included in the plan
- Overage cost on the excess
The one-off setup is typically €3,000-10,000 and covers onboarding, configuration, integration with HRIS/job boards, training. Vendors that offer 'free' setup typically amortise the cost into the first-year subscription.
Cumino transparency: our plans are published on /prezzi. Pay-as-you-go €15/candidate, Steel €1,999/month, Platinum €4,999/month, Enterprise custom. Setup €5,000 amortised over 12 months.
How to choose the best ATS
The four evaluation criteria that really make a difference:
- 1
Native integrations
With the job boards you actually use (Monster, InfoJobs, LinkedIn) and with your HRIS/payroll system (Zucchetti, TeamSystem, BambooHR, Personio).
- 2
Documented compliance
Ask the vendor for the GDPR DPIA, AI Act documentation and a demonstrable audit log.
- 3
Matching quality
Tested on your real data. Do not trust demos with the vendor's clean datasets: ask for a paid Pilot Program (3 months typical) with your real candidates and jobs.
- 4
Pricing aligned with your volumes
For high volumes the per-candidate model beats the others; for a few high-value open positions, per-job can be more convenient.
FAQ
What is an ATS?
An ATS (Applicant Tracking System) is software that manages the entire hiring cycle: application intake, screening, candidate communication, interview scheduling and recruiting analytics. It is the baseline tool for any HR team handling more than 50 applications per month.
When does a company need an ATS?
Roughly when monthly applications exceed 50 or when the HR team is more than one person. Below that threshold a spreadsheet may still work; above it, the lack of a structured system leads to GDPR compliance errors, lost candidates and unacceptable response times.
Difference between ATS and HRIS?
An ATS handles the process BEFORE the hire (intake, screening, interviews, offer). An HRIS (Human Resources Information System) handles the employee AFTER the hire (records, payroll, attendance, performance). They are complementary and integrate via API.
What makes an "AI ATS" different from a traditional one?
An AI ATS replaces keyword filtering on CVs with semantic matching based on skill ontologies (e.g. ESCO). It recognises synonyms, context and adds capabilities such as Voice-to-CV, interview-question generation, predictive scoring. It must be EU AI Act compliant.
How much does an ATS cost in Europe?
Pricing varies widely. Pay-per-use models start at €10-15 per processed candidate. Subscription models start around €1,500-2,500/month for SMB plans with 1,000-2,500 yearly applications included. Enterprise tiers for high volumes go from €5,000/month upward. Most vendors require a one-off setup of €3,000-10,000.
How do you pick the best ATS for your company?
Four main criteria: native integrations with your job boards and HRIS/payroll, GDPR and EU AI Act compliance, matching quality (run a demo on your real data), pricing model aligned with your volumes (per-candidate vs per-job vs flat).
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