Last year I purchased a domain, cpanel hosting, and Office 365 as a bundle. With my renewal coming up, I'm wondering if I can let the domain and the cpanel hosting expire, and still keep only the Office 365 services.
If you want to utilize the email from Office 365 your domain must remain active. You can drop the cPanel hosting if you don't want to continue with it. The cPanel hosting hosts your website. For Office 365 to work you must have an active domain attached to it. Hopefully this helps!