Checkout https://blog.3sharecorp.com/aem-search-vs.-solr-search for Solr integration with AEM.

Checkout https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/secure-aem-graphql-endpoint-with-oauth-okta/td-p/569361 for securing graphql endpoint.

You can try non-Adobe CDN products like Akamai.Also, follow up on the Adobe support ticket as well.

The best practice is to use Adobe Launch to integrate AEM with Adobe Analytics.https://blog.developer.adobe.com/integrate-adobe-launch-with-adobe-experience-manager-ffc3670e6f4e

You can try restoring AEM using https://jackrabbit.apache.org/oak/docs/command_line.html 

You can try restore AEM instance to previous date:https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/how-to-restore-aem-instances-using-journal-log-in-adobe/m-p/374502

Checkout https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/robots-txt-file-in-aem-web... for robots.txt

Checkout https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/robots-txt-file-in-aem-websites-aem-community-blog-seeding/m-p/369442 for robots.txt

Checkout https://experienceleague.adobe.com/docs/events/experience-manager-gems-recordings/gems2015/aem-oak-external-login-module-authenticating-with-ldap-and-beyond.html?lang=en & https://experienceleague.adobe.com/docs/experience-manager-65/administering/security/ldap-config.html?lang=en  for conf...

Checkout https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/implementing/using-cloud-manager/ip-allow-lists/introduction.html?lang=en for AEM as Cloud.For other AEM versions, checkout https://blogs.perficient.com/2022/02/15/ip-whitelisting-through-aem-dispatcher-in-5-ea...