Now that we have seen the tenant level,
let's take a look at what we can do at the
site collection level. SharePoint Online
allows you to configure external sharing
settings at the site collection level, and
most of those settings at the site level
really need to be equal or more
restrictive than the tenant level ones.
Some of the settings we can do are for
example, what is the most permissive level
that users can share to between the same
four options as the tenant level ones?
Remember, it must be more restrictive so
if you have existing guests at the tenant
level, you cannot enable anonymous on a
specific site level. We can also override
the default link type and default link
permissions, limit external sharing by
domain, and prevent non-owners from
inviting new users. You can also configure
a different anonymous link expiration at the site collection level.