Brand guidelines convey a variety of information and tips about your brand, useful both internally to your company or organization and externally to your affiliates, partners, and customers. Although there is no industry-wide standard for what constitutes a brand standards document, the most notable organizations use brand guidelines as a tool to help everyone understand how to represent their brand.
Good guidelines connect different aspects of your brand, such as your logo, colors, and typography, to form a cohesive identity.
Great guidelines are highly useable, both to for you to check that anything you do is on brand but also, to create anything new in the future that you didn’t know yet you needed when they were written!