What is a data processing agreement and when is it critical?

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1 min read • Simon • GDPR • 15 December 2025

When an organisation engages external providers to process personal data, the GDPR requires the relationship to be governed by a data processing agreement (often referred to as a DPA). This is more than a formal obligation — a well-drafted DPA is a core element of an organisation’s wider information security and compliance strategy.

The core function of a data processing agreement

A data processing agreement is a contract between the controller and a processor — that is, a party processing personal data on behalf of the controller. The agreement must ensure the processor acts only on the controller’s documented instructions and in accordance with the GDPR.

Under Article 28 of the GDPR, the agreement must, among other things, specify:

  • The purpose of the processing.
  • The types of personal data and categories of data subjects.
  • The duration of the processing.
  • The obligations and rights of the controller.
  • The technical and organisational security measures to be applied.

It is also essential to regulate how, and under what conditions, the processor may appoint sub-processors. The controller should be given the opportunity to approve these in advance. Without clear provisions on these points, the agreement risks being rejected during a supervisory inspection by the Data Protection Authority, which may result in sanctions and loss of trust.

A strategic tool in data protection

Beyond meeting legal minimum requirements, a DPA can be used strategically to reduce risk and set clear parameters for collaborations that involve personal data. Many organisations outsource parts of their IT operations, customer service, marketing or data storage. Each such relationship represents a potential risk where personal data are processed.

By tailoring the DPA to the specific processing and the organisation’s risk profile, you create the conditions for a structured approach to data protection. Important components that reinforce the strategic function include:

  • Instructions on processing: It must be clear what processing the processor is permitted to carry out.
  • Specific security requirements: Instead of general references to “appropriate technical and organisational measures”, specify concrete controls — such as encryption, access management or logging.
  • Right of access and audit: The organisation should be able to audit, or have audited, the processor’s compliance.

In addition to its role in risk management, the DPA also carries commercial weight. For certain engagements — particularly in the public sector or with larger enterprise customers — a correct and complete processor agreement is a basic precondition to be considered as a supplier. Documented GDPR compliance is often part of the procurement process. A well-crafted DPA can therefore serve as a quality marker and competitive advantage, especially in sectors where data protection is business-critical.

Morling Consulting’s experienced GDPR lawyers assist with reviewing, drafting and tailoring data processing agreements to reflect both regulatory requirements and commercial needs.