Samsung TVs have a web browser built-in, but the features it supports depend on the Tizen version of the TV. Older TVs may not support all the latest HTML/CSS/JavaScript features, leading to a poor user experience. If you plan to have a Native TV banner click on your website, Samsung Ads recommends having a fallback experience for older browsers.

Samsung Ads suggests three techniques for handling the fallback experience:

• Progressive enhancement: Build a website or ad to work on all browsers with a basic user experience, with advanced features where possible. You can find more information about this technique here: Progressive Enhancement - MDN Web Docs Glossary: Definitions of Web-related terms | MDN.
• Graceful degradation: Build a website or ad with advanced features for modern browsers, but still maintain a basic user experience on older browsers. You can find more information about this technique here: Graceful degradation - MDN Web Docs Glossary: Definitions of Web-related terms | MDN.
• Backup image: Show a static or slightly animated image if features are not supported.

Documentation on which features are available for each Tizen version can be found on the Samsung Developer website: General Specifications | Samsung Developer. There is also a table listing which Web Engine is used for each Tizen version, helpful to find the corresponding Chromium versions. See Web Engine Specifications | Samsung Developer for more information.

Once you know the chrominium version you need to adhere to and to ensure compatibility, test your website using browser emulators like BrowserStack or SauceLabs.