A style guide can be vital to ensuring your company has a clear and consistent brand.
Generally, there will be many people throughout your company working closely with your brand identity, and they may have different idea on how to make use of the brand. These people may be directly marketing the brand, or they may be creating independent content for your company that requires integration of brand elements. Designers, writers, website developers, and others all need to be on the same page when it comes to how to best portray your company’s brand.