In the article Impact of US sanctions on IT services Nico Rikken explains that sanctions may also target IT services. He explains the system and mentions several recent examples:

• the open source initiative Organic Maps that was blocked by Microsoft (Github); they decided to leave Github;
• the International Criminal Court that suffered loss of access to data and services, blocked by Microsoft.

Rikken concludes that the risk of US sanctions against IT services has increased and that it is necessary to take preventive measures.