Set up SSO and your users can sign into your websites via other accounts. For example, let’s say a user has a Microsoft 365 account. You can let them sign in using their Microsoft 365 username and password. That way they don’t have to remember their Altis details.
What’s more, Microsoft 365 (or whichever external service you choose) still does its verification checks. Like when a user logs in from an unknown device or new region. So you get to use the external service’s security as a bonus.
Your users can then login with their chosen SSO login credentials. The screenshot below shows Hootsuite offering their users SSO: