Aem provides all the capabilities like creating page version, restore and preview of created page version. See the below documentation and if it’s not working for you then you need to do some more debugging from logs  https://experienceleague.adobe.com/docs/experience-manager-65/authoring/siteandpag...

Simplest solution in your case would be to create a new path field in your aem template and select the js file from there that you want to load to some specific pages

Cloud manager provides the api to integrate the pipeline activity notification to communicate ovation channels like slack. https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/slack-notifications-for-adobe-cloud-manager-pipeline-aem/m-p/431339If you don’t want to integrate the a...

Here is the document that explain step by step process how upload of assets happens on aem cloud  https://blog.developer.adobe.com/introduction-to-aem-as-a-cloud-service-asset-upload-http-api-fc560ffd7221   https://experiencing150.rssing.com/chan-25971229/article426.html#:~:text=Uploading%20assets%2...

Aem asset create api is deprecated on aem cloud and it’s because of the reason that assets now don’t resides  on aem repository instead the binary go to s3 bucket so your existing servlet won’t work for aem cloud. it seems for your use case you can either use asset upload api as explained on https:/...

Above explained strategy was used before when aem maven project archetype doesn’t supported the react or angular project. No harm in that. Many projects are still running in that old fashioned way

Try updating the maven plugin locally and also on your IDE.   https://stackoverflow.com/questions/47920305/can-not-set-org-eclipse-aether-spi-log-logger-with-custom-maven-plugin

I believe you want same sling model to return different json output based on the selector in the url. If that’s the case then on your sling model you can read the selector and based on that value to  in can return the json of corresponding component. final String selectorString = request.getRequestP...

Sling model can be registered with resourceType of your aem component. I don’t think you need to register anything here. In your sling model you can read the sling selector from the url and send the response accordingly based on selector value. But in this case you need to adapt your sling model usi...

If you inspect the link on browser do you see .html append in the href ? Is the behaviour same on author, publisher and dispatcher?