https://www.bleepingcomputer.com/news/microsoft/microsoft-enables-security-defaults-in-azure-active-directory/

Microsoft introduced new secure default settings dubbed 'Security Defaults' to Azure Active Directory (Azure AD), now available for all license levels, including trial tenants.

Since introducing the Security Defaults feature that replaces baseline protection policies, Microsoft says that it has already been enabled for over 60k newly created tenants, with another roughly 5k also having opted in.