A developer is given a task to implement a new Page Designer layout component that doesn't accept certain asset components.
How should the developer achieve the above task?

A Digital Developer is working on a multi-site realm. A new site requires a different layout for the account landing page. The business logic and data model remain the same. The existing code is in AccountControl.js and accountlanding.isml in the app_storefront cartridge. The app_storefront cartridge contains code for all other business functions. The cartridge path for the new site is currently int_cybersource:int_paypal:app_storefront.
The Developer creates a new cartridge named app_newsite that contains only the accountlanding.isml template for the new site.
Which modification should be made to the new cartridge path?

Universal Containers wants to associate a region code value with an order to indicate the general area of its destination. This region code must be accessible whenever the order history is displayed.
What is required to accomplish this?

A custom cartridge that seemed to be performing well in a sandbox has been installed in production. The production instance is showing increased page load times that seem to be related to the new custom code. What can a developer do to quickly track down the potential problem?

Which two methods are efficient and scalable? (Choose two.)