Settings are best described as pre-defined configurations which apply to a tenant, users or mailboxes which are derived from best practices by industry experts.
Most settings are configurable using parameters, allowing you to tweak them for your own requirements.
Each setting is accompanied with comprehensive documentation which helps you understand what it does, the user impact and the benefit it brings to your tenants.
Settings can be applied individually to a tenant or assigned to a template, which can be applied to multiple tenants at once.
MSPMagic is regularly adding and updating the settings library, allowing you to easily stay up-to-date with best practices without needing to research and implement on your own using PowerShell or Graph API.
To submit an idea for a new setting, use the feedback section of the app.