The law allows local authorities to name "designated providers" of a certain scale – currently only achieved by Apple and Google – and require those providers to do three things:
Allow third-party app stores on their devices;
Allow application developers to use third-party billing services;
Enable users to change default settings with simple procedures, and offer choice screens for tools like browsers;
And it forbids them doing three more:
Engage in any form of preferential treatment of their services over those of competitors in the display of search results without justifiable reason;
Use acquired data about competing applications for their own applications;
Prevent application developers from using features controlled by the OS with the same level of performance as the one used by Designated Providers.