In this chapter, we have built three distinctive functionalities, all of which relate to the catalog part of Magento. Though very lightweight, they stand to show how easily Magento can be extended with new features without really overriding any of the core files. Using plugins and JS components are merely some of the approaches we might take. Quite often, we will find that a single requirement might be delivered with more than one approach. The main guiding rule for our code should always be: use the least intrusive. Catalog functionality plays a major role in the customer conversion process, so our priority should always be failsafe when possible.
Moving forward, we are going to take a look at some of the things we can do to customize the checkout.