Dieter works with or without a legally required data protection officer. When you need an external DPO: appointment and notification to the authority in minutes – plus all mandatory documents and processes in one place.
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Check with Dieter whether a DPO is mandatory, meet usual GDPR duties in parallel – and book the external DPO where it fits. Urgent items first, the rest in manageable steps instead of one huge project.
Context & obligation check
Capture company size, processing, and special categories – the basis for whether Art. 37 GDPR applies.
Documents & processes
Create privacy policy, Impressum, DPA, TOM, records, etc. – so data protection is documented traceably.
Appoint & notify DPO
Optional: appoint the TÜV-certified external DPO via Dieter and notify the competent supervisory authority.
With or without a legal DPO obligation
Even without a DPO obligation you must comply with the GDPR. Dieter supports your duties – and makes the external DPO a clear add-on when you need one. Already have a DPO? The guide changing your data protection officer covers notice periods and handover.

An officially appointed and notified external data protection officer creates clarity externally – for customers, partners, and authorities. With Dieter you combine a TÜV-certified external DPO and complete appointment and authority notification in minutes in the same guided flow as your other documentation, without media breaks. Data protection is an ongoing operational process, not a one-off project – especially when appointment is mandatory under Art. 37 GDPR. Already have a DPO and unhappy with them? Changing your data protection officer takes six to eight weeks, with no gap in the designation.
With or without DPO obligation: transparency, records, and protective measures must be properly in place. Dieter is built for teams without a large legal department – start-ups, freelancers, retail, practices, trades, and other SMEs – bundling duties in manageable packages instead of a patchwork of tools. Once Art. 37 GDPR requires a DPO, you enable the TÜV-certified external officer in the same interface instead of opening a second system.
You stay in control of pace: high-risk topics first, then the rest in clear steps. Many sub-tasks need only a few minutes per week – so compliance matures over time instead of in one unrealistic mega-project. Dieter orders tasks and evidence so priorities and traceability align and Art. 37 GDPR requirements remain documentable.
The rule of 20 people who regularly process personal data is the most common trigger for appointment under Art. 37 GDPR – part-time staff, temps, and interns typically count fully; exceptions are narrowly construed.
Regardless of headcount, an external DPO may be mandatory for large-scale, regular, systematic monitoring of data subjects or where core activities involve special category data under Art. 9 GDPR.
Typical mistake
The number of relevant employees is only roughly estimated or not documented. The obligation assessment is then not traceable for authorities or internal audit.
An external DPO remains independent but is embedded in the organisation — from awareness to documentation:
Appointment should clarify role, reachability, and independence; it is the legal framework for cooperation with your team.
Notification to the competent data protection authority documents the designation — central evidence and reference for authority contact.
With Dieter you integrate these steps into your other documentation (privacy policy, DPA, TOM, records) instead of isolated PDFs.
An internal DPO often knows day-to-day operations but is in an employment relationship — dependencies and absences must be managed organisationally.
An external DPO typically brings broader project experience and is replaceable as a person; contract, availability, and interfaces to your processes should be clear.
Which model fits depends on size, industry, and data sensitivity — the legal obligation to appoint must be assessed independently.
What this product page covers: which building blocks Dieter brings together – and where the external DPO adds on once the obligation check requires it:
Typical mistake
An external DPO does not replace missing records or unclear processing — the organisational basis must come first.
Start with Dieter: meet obligations and document in a structured way – and when needed appoint and notify the TÜV-certified external data protection officer.
Dieter guides you step by step through every relevant GDPR topic, explains each step in plain language and keeps content and requirements up to date. You stay on the safe side of data protection law and can get back to your actual work.

Dieter guides you through all mandatory information and turns it into a privacy policy that matches your company and your processes.
Use Cases:
Dirk
Owner at Kundegesucht
Use Cases:
Sofie
Founder at Miss Sofie's Coaching
Use Cases:
Larissa
Co-Founder at focus future
Use Cases:
Simon
Co-Founder at Dubly.AI GmbH
Use Cases:
Manuel
CEO at ALMAE Heilarbeitsinstitut GmbH
Use Cases:
Jarod
Sole proprietor at Jarod Schilke – IT Services
More reviews on OMR Reviews – Dieter and Google Reviews.
Meet our team, learn about the values and principles we work by and where we get involved.
We are a small, dedicated team of lawyers and techies working every day to make Dieter even better.
Transparency is close to our hearts and part of our DNA. In a dedicated overview we openly explain how we handle personal data – from technical measures and contracts to the services we use and your rights.
Get to know Dieter and take the first step towards a GDPR-compliant business.
The question of whether you need an external data protection officer starts with a sound assessment of the legal requirements, not with gut feeling. Businesses must check thresholds, the scope of processing and risk profiles in a traceable way. A documented decision creates clarity for management, supervisory authorities and internal stakeholders.
When an external data protection officer is appointed, clear interfaces matter: availability, scope of tasks, escalation paths and the interface to the authorities. Appointment and notification should therefore be embedded in an overall process that also covers the record of processing activities, TOM, DPAs and data subject requests. This avoids a parallel operation alongside your actual data protection organisation.
An external data protection officer adds expertise and independence but does not replace internal responsibilities. The model only becomes effective when teams supply data flows, tools and changes in a structured way. Businesses then benefit from faster prioritisation, clear communication and sound decisions on demanding data protection questions.

A compliant privacy policy and legal notice belong on every successful website. DIETER was developed by data protection officers and lawyers to back you up and support GDPR compliance.
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