Yes, you can use web fonts for your clients' websites, but certain conditions apply. The licenses allow the use of fonts as long as the website remains under your management and is hosted according to the provider's terms.
However, starting from December 31, 2019, web fonts used for client websites must be loaded directly from their own Adobe Creative Cloud subscription to ensure proper license attribution and avoid any service interruption.
For more details, please refer to the full Terms of Use, especially regarding commercial use and reselling the service.