Both are server-side integration options and give you the best performance overall, so it really comes down to your setup. If you’re currently using cloudflare, the cloudflare integration is the easiest. If you’re not using cloudflare, go with the name server integration. You also have the ability to turn cloudflare on in your Ezoic dashboard, so if cloudflare is something you want and you’re not currently using it, do the name server integration and then activate Cloudflare from within your Ezoic dashboard.