Do I have to use IMCE?
No. Acquia Cohesion allows the site builder to select, either use of IMCE or Entity browser for browsing and selecting images.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
If you're removing styling from a base style, those styles still apply until you have saved the base style.
Base styles are CSS styles for HTML elements.
Yes, the component link field supports both internal and external URLs.
Running the composer update command will update any composer packages that have newer versions available.
Google maps may not be showing if you have not set a Google maps API key.