Please go through the documentation here : https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/ad0-e126-exam-sample-tests/m-p/556609   https://experienceleague.adobe.com/en/docs/certification/program/technical-certifications/aem/aem-expert/aem-sites-e-business   https://app.roc...

can't you include in page component customheaderlibs?  you can use sling model to pass environment specific code to head.jsp   @Model(adaptables = Resource.class)public class EnvironmentSpecificCodeModel { @ValueMapValue private String environmentSpecificCode; @Inject public Environment...

Dispatcher header is a custom configuration - it will be available in Response Headers. To confirm whether a page is being served from the dispatcher cache, you would need access to the dispatcher logs. also as H_kataria mentioned , you can check HIT or MISS on X-Cache in Response Headers. The one w...

you can check below information to check page is cached or not :    The dispatcher logs can provide information about whether a page is served from the cache or not. You can enable debug logging for the dispatcher to get more detailed information. Look for entries with /dispatcher/cache in the logs....

Please check /system/console/bundles - all bundles are in 'active' state or not. wknd and core components

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/how-i-can-include-xf-directly-not-through-parsys-in-aem/m-p/459969

please try like this :   == parent model ===   @Model(adaptables = Resource.class)@exporter(name = "jackson", extensions = "json")public class ParentCompModel { @JsonProperty("title")public String getTitle() {  return  title;} @JsonProperty("subtitle")public String getSubtitle() { return subtitle;} ...

Please try this:   mvn -B org.apache.maven.plugins:maven-archetype-plugin:3.2.1:generate \-D archetypeGroupId=com.adobe.aem \-D archetypeArtifactId=aem-project-archetype \-D archetypeVersion=39 \-D appTitle="WKND Sites Project" \-D appId="wknd" \-D groupId="com.adobe.aem.guides" \-D artifactId="aem-...

Is this happening only in production instances?, are you able to replicate this issue in lower environment. Please raise a Support ticket with AMS (adobe managed services) to check with their engineering team.  

Generally to use any Third Party application, First you need to go through the API documentation and integration details. https://mailchimp.com/developer/marketing/api/ https://experienceleague.adobe.com/en/docs/experience-manager-cloud-service   Import the MailChimp HTML Template: Import the HTML f...