A Cookie Banner allows website owners to comply with the privacy laws worldwide, such as Europe's GDPR, California's CCPA, Virginia's VCDPA, and others. Most privacy laws require businesses to ask and obtain website users' consent to use cookies on their devices and process their personal data before the use of cookies. The most common way to get website users' cookie consent is through a Cookie Banner.
Thus, if your website uses cookies, you must have a Cookie Banner.
Check for free at CookieScript if your website uses cookies.