<type name="Magento\Checkout\Model\CompositeConfigProvider">
    <arguments>
        <argument name="configProviders" xsi:type="array">
            <item name="checkout_klarna_kp_config" xsi:type="object">
                Klarna\Kp\Model\KpConfigProvider
            </item>
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is for the frontend area. This is the area that corresponds with the cart sub-application.

This configuration tells the Object Manager that when a user wants a Magento\Checkout\Model\CompositeConfigProvider object that the following arguments should be used in the foo object's constructor.

• $configProviders = [...items...];

<type name="Klarna\Kp\Model\KpConfigProvider">
    <arguments>
        <argument name="config" xsi:type="object">
            KpConfigHelper
        </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 Klarna\Kp\Model\KpConfigProvider object that the following arguments should be used in the foo object's constructor.

• $config = new KpConfigHelper (...)