There are plenty of good reasons to have a brand system.
Here are just a few.
Improve Team Collaboration
A brand system should connect teams that have typically worked in a silo. Designers, developers, marketers, and agencies can all work from the same playbook. These playbooks should specifically spell out how a new product or website can be designed, built, marketed, and distributed across multiple channels. When brand systems don’t exist, team members spend hours searching email, Slack, Teams, SharePoint, DropBox, etc. searching for that single element.
Manage your Brand Across Many Formats
From a technical perspective, your brand will be distributed in many formats. Your brand system will capture all of these formats and have clear playbooks or guidelines spelled out on how to use the particular asset in that particular format. Even to the extent that different file types or sizes are preferred. For example, when posting on Instagram, you’ll want to use the optimal image size, rather than just taking whatever asset already exists which may have been created for an entirely different purpose and platform.
Create a Consistent Brand Experience
A brand system will ensure consistent style in your communication, marketing, advertising, and public materials regardless of whether those assets were created internally, externally, or by an agency. No matter where someone interacts with your brand, you want the same look and feel to be persistent throughout. A brand system provides a single source of truth for any brand contributor.