In a brand book you can not miss the elements that make up the visual identity of the brand, such as the logo, the symbology, the colors, the fonts, as well as the way they are articulated.
Before the manuals included corporate stationery, cards, invoices, envelopes, etc., as well as some merchandising or signage items.
But today the manuals, even being lighter, contemplate other needs such as the style of expression of the brand in physical spaces, signage criteria, style of advertisements and publications, and, of course, the behavior of the brand identity in digital media like web, apps, social networks.