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Blogs / 

ICT Projects part 9: the Data Processing Agreement

IT, Privacy & Cybersecurity

1 April 2025

Written by

Natascha van Duuren

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There is hardly any IT project imaginable where personal data is not processed. When personal data is processed, both the controller and the processor are required under Article 28 of the GDPR to draw up a data processing agreement. Compliance with this legal obligation is important, if only because the mere fact that no data processing agreement has been concluded can lead to a fine from the Data Protection Authority. When are you a 'controller' or 'processor' and what requirements are imposed on a data processing agreement?

Role distribution – controller or processor?

When various parties are involved in the processing of personal data, the GDPR assumes a role distribution. One of the key concepts in this role distribution is the controller. This is the party that determines the purpose and means of the use of personal data. Another important concept is the processor. A processor processes personal data on behalf of the controller. An example of a processor is a payroll administration office. A SaaS service provider or hosting provider that processes personal data also qualifies (in principle) as a processor. (Joint responsibility can also occur, but for the sake of providing a clear and concise overview, we will leave this aside).

It is important that parties are aware of their role. The GDPR imposes various legal requirements on the fulfilment of these roles. In practice, however, it appears that it is not always easy to qualify the correct role. The risk that parties run in that case is that they take on too many or too few obligations. In the first case, they assume more responsibility (and ultimately more liability) than necessary. In the second case, they do not meet their legal obligations. In both cases, this is not without risk.

The data processing agreement

Concluding a data processing agreement between the controller and processor(s) is legally required. A widespread misunderstanding is that only the controller has the obligation to ensure a data processing agreement is in place. This is not correct. This legal obligation rests on both the controller and the processor. What agreements must now be included in a data processing agreement? The following matters must at least be arranged:

  • The subject and duration of the processing;
  • The nature and purpose of the processing;
  • The type of personal data and categories of data subjects; and
  • The rights and obligations of the controller.

Provisions regarding the processor

In addition, the agreement must:

  • Specify that personal data may only be processed based on the written instructions of the controller;
  • Ensure that persons involved in the processing observe confidentiality;
  • Ensure that the processor will provide adequate security for the personal data (in line with Article 32 GDPR);
  • Specify that the processor does not transfer processing activities to sub-processors without prior consent;
  • Specify that the processor assists the controller (whether in the form of information or otherwise) in complying with obligations arising from the GDPR; and
  • Specify whether the processor deletes or returns the data to the controller after the processing services have ended.

Parties are free to arrange these matters in more detail. For example, parties can agree on specific conditions under which the processor may outsource its processing services to sub-processors. It is also common to include a list of security measures that are at least expected from the processor.

Additional provisions

In addition to the provisions that must be included in a data processing agreement by law, it is advisable to include provisions on liability and indemnification. How do parties deal with a fine imposed by the Data Protection Authority in case of non-compliance with the GDPR? It is also advisable to make further (procedural) agreements about data breaches. How to act in the event of a data breach? To whom and how should a data breach be reported? What information must be shared in that case, etc.?

De Clercq takeaways

  • The GDPR distinguishes between parties based on their mutual role distribution. The controller is the party that determines the purpose and means of the use of personal data. The processor is the party that processes personal data on behalf of the controller.
  • However, situations can arise where the positions of parties are not clearly defined. It is therefore important to exercise great care in determining the position of parties. This is to prevent taking on too little or too much responsibility.
  • Both the controller and the processor are required under Article 28 GDPR to ensure a data processing agreement is in place. This data processing agreement contains at least provisions on the subject and duration of the processing, the nature and purpose of the processing, the type of personal data and categories of data subjects, and the rights and obligations of the controller.
  • Parties can mutually agree to arrange these matters in more detail and more precisely. This is certainly advisable for a number of subjects.

Questions?

If you have any questions about successfully executing ICT projects, please contact Natascha van Duuren, Partner & Attorney at law IT, Privacy & Cybersecurity.

The content of this blog is part of 'ICT Projects: a practical guide', a collection of articles on successfully executing an ICT project. Click here to download the practical guide.

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