If we want to use the custom components in the record home page, we are going to implement flexipage:availableForRecordHome (both for the record page and the home page). If we want to use this component in any type of page, we have another interface called flexipage:availableForAllPageTypes.

If we want to use this component in the community builder, we need the forceCommunity:availableForAllPageTypes interface. If you remember, while we were defining a custom component, there were some checkboxes, which were nothing but the interfaces.