Yes, a cookie popup or banner is necessary if you are a website that functions in any of the EU countries and the UK or has visitors from these countries. Websites in the EU are also bound by the ePrivacy Directive or EU cookie law. (Read more on EU cookie law). Data privacy laws and directives like the LGPD (Brazil), POPIA (South Africa), CNIL (French), CCPA (US) also have consent requirements. This means if your website has visitors from these countries, you can be subject to the respective privacy regulations. Therefore, it is the best practice to add a compliant cookie popup or banner on your website.