What is the artifact ID of the maven dependency that contains all core AEM APIs?

There is a config file package.myClass.config.factory-myApp.xml - what is true? (Choose two)

A developer needs to create a banner component. This component shows an image across the full width of the page. A title is shown on top of the image. This text can be aligned to the left, middle, or right. The core components feature a teaser component which matches almost all requirements, but not all.
What is the most maintainable way for the developer to implement these requirements?

A custom AEM application contains Bundle A and Bundle B.
Bundle A has a dependency to Bundle B via Import-Package.
How can both bundles be deployed most efficiently across all environments?

Two AEM publish instances feed a single Dispatcher.
Which part of the Dispatcher configuration should a developer review to ensure both AEM publish instances are used?