Hello,
I can give you a high level solution of what I think you are looking for.
Most likely you’re interested in the need of enabling your AEM content for multi-channel consumption, for example, a mobile Android app, a mobile IOS app, a frontend JavaScript web application, etc...
You’ll be definitely using AEM as headless content, so this means that you would need to find a way to expose content from AEM in a unified, digestible, and reusable way.
If you are using AEM core components and editable templates, you can try using the out of the box content service feature; this allows you to get a JSON representation of an entire page when you add the selector .model.json. Adobe has a tutorial on how this can be done https://docs.adobe.com/content/help/en/experience-manager-learn/getting-started-with-aem-headless/ov....
If you are not using AEM core components, then utilizing OSGI sling servlets would be your best bet; always remember to include a caching strategy.
In summary, I hope this advice gives you some ideas on where to start. However, there should be some kind of headless architecture design & planning sessions involved with your team to ensure that all departments of the team agrees to the headless approach.
