Your brand should invoke an instant & clear association of what you do and what makes you unique. A customer’s first experience of your brand initiates your unique concept, which is then repeated wherever your brand is encountered.
Your website persuades your audience that your brand is legitimate and trustworthy; it conveys your values while enabling your audience to become more familiar with your product. It should draw them in long enough to win their approval.
Good quality design conveys professionalism - not just information. Your public image is an opportunity to reinforce the brand values. Marketing should reflect your brand and its main concept.