Enqueue AWS Script

Try to save jQuery.noConflict(); as jquery-no-conflict.js. Then enqueue everything with proper dependencies:

<?php
function img_scripts_with_jquery() {
    wp_enqueue_script(
        'jquery-no-conflict',
        'path/to/jquery-no-conflict.js',
        array(
            'jquery'
        ),
        'version',
        true
    );
    wp_enqueue_script(
        'aws-cba',
        'https://images-na.ssl-images-amazon.com/images/G/01/cba/js/common/cba_shared.js',
        array(
            'jquery-no-conflict'
        ),
        'version',
        true
    );
    wp_enqueue_script(
        'aws-merchant-cart',
        'https://images-na.ssl-images-amazon.com/images/G/01/cba/js/shoppingcart/merchant_cart.js',
        array(
            'jquery-no-conflict'
        ),
        'version',
        true
    );
}
add_action( 'wp_enqueue_scripts', 'img_scripts_with_jquery' );