Iframe is not working in UXP

Iam trying to migrate the CEP legacy application to UXP. In CEP application they have loaded the UI using Iframe, when Iam trying to use the same in UXP it is not working. I went through this link (https://developer.adobe.com/photoshop/uxp/2022/guides/uxp_guide/unsupported/) it is saying that Iframe is not supported in the UXP applications. Any alternatives for Iframe which will be supported in the UXP?