Do you want to embed the whole application or just a chart?
If you just want to import a chart you might want to use the "Single configurator" from your dev-hub. You might import multiple charts this way but if you want something more specific you might also want to look into mashups.
Just remember to uncheck "Disable interaction" in case you want the chart to be interactive.
Thank you for your response. Obviously, I need to work on my development skills for this matter. I will check the developer guide that you shared with me.
On the other hand, Media Box Extension looks great! Thank you for your hard work. After the first look, I couldn't see the feature that I can dynamically affect/filter the "web site" object like in the older version of the extension. Is it possible to construct the dynamic string for the URL through Qlik Sense features ($(..)) in the Media Box Extension? If possible, do you have an example QVF?