<type name="Amazon\Core\Client\ClientFactory">
    <arguments>
        <argument name="logger" xsi:type="object">
            Amazon\Core\Logger\Logger
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is for the base area. Base area configurations will apply to all the sub-applications.

This configuration tells the Object Manager that when a user wants a Amazon\Core\Client\ClientFactory object that the following arguments should be used in the foo object's constructor.

• $logger = new Amazon\Core\Logger\Logger (...)

<preference for="Amazon\Core\Client\ClientFactoryInterface"
            type="Amazon\Core\Client\ClientFactory"></preference>

This is a preference configuration.

This configuration is for the base area. Base area configurations will apply to all the sub-applications.

This preference configuration tells the Object Manager when a user wants a Amazon\Core\Client\ClientFactoryInterface object that it should return a Amazon\Core\Client\ClientFactory object.