Short answer
A managed service provider can be in NIS2 scope because Annex I lists ICT service management (business-to-business), including managed service providers and managed security service providers. Article 6 defines an MSP as an entity providing installation, management, operation, or maintenance of ICT products, networks, infrastructure, applications, or other network and information systems through assistance or active administration, on customer premises or remotely.
That sector entry is only the first step. Article 2 applies NIS2 to Annex I or II entities that qualify as medium-sized enterprises under Recommendation 2003/361/EC or exceed those ceilings, and it also captures certain entities regardless of size through specific special-case rules. Article 3 then separates covered Annex I entities into essential or important entities, with larger Annex I entities generally treated as essential and other covered entities treated as important unless another Article 3 rule changes the result.
- Start with the legal entity, not the brand name or product line.
- Confirm the activity is managed service or managed security service activity, not only advisory, resale, staffing, or one-off project work.
- Check whether the service is provided or carried out within the Union.
- Apply the size-cap and any Article 2 special-case rule before deciding the entity is outside NIS2.
- Classify the result as essential, important, outside current scope, or escalated for Member State legal review.
Article 6 defines managed service provider and managed security service provider, Article 2 supplies the size and special-case scope rule, and Annex I lists MSPs and MSSPs under ICT service management.
NIS2 Article 2 points to this Recommendation for the medium-sized enterprise size test used in the general scope rule.
Commission FAQ context confirms NIS2 replaced the old OES/DSP split with essential and important entity categories and lists ICT service management among high-criticality sectors.