Recital 81 of the Data Act mentions specifically Software as a Service (SaaS), Platform as a Service (PaaS) and "Infrastructure as a Service" (IaaS), as well as "Storage as a Service" and "Database as a Service". The definition of a data processing service is very similar to the definition of "cloud computing service" in the Network Information Security (NIS2) Directive.
The Data Act has extra-territorial effect – it applies where customers are based in the EU, rather than with reference to the location of providers, so non-EU providers are potentially in scope. Unlike the data sharing aspects of the Data Act, there are no carve-outs specifically to benefit smaller providers of data processing services. The provisions also apply regardless of whether the services are provided to customers which are businesses or consumers.
The core obligations, set out in Article 23, require that providers of data processing services remove pre-commercial, commercial, technical, contractual and organisational obstacles which inhibit customers from switching to another provider, an on-premises solution, or using the services of multiple providers. There are some carve-outs for customised solutions, i.e. where all or the majority of main features of the services have been custom-built, but these are only carve-outs from provisions relating to functional equivalence, restrictions on switching charges and technical aspects of switching. The mandatory contract requirements will therefore largely still apply to custom-built services. Moreover, as soon as customised services are included in the provider's standard service catalogue (i.e. become one-to-many), these carve-outs cease to apply. Services provided for testing and evaluation purposes for a limited period only, however, are excluded. Where scope exclusions apply, the provider must draw this to the customer's attention pre-contract.
Obligations in relation to switching to another data processing service provider only apply where services are of the “same service type”, which means services of the "same primary objective, data processing service model and main functionalities” – so there's room for debate in this switching scenario if services are only similar.