The start point of your branding is the logo. From there everything the company produces or owns should "feel" like it comes from your company. When you walk by a pile of documents on a desk, you should recognize that it's from your company. It's not just plonking the logo everywhere.
These are things to keep in mind for good branding:
✅ Figure: Good example - YakShaver brand guideline
See more at YakShaver Logo and Brand Assets and YakShaver Brand Guide.
Tip: Make it easy for designers and developers to find design resources by linking them clearly on your website and intranet.