La Carte licensing model is the most complex for a customer to manage because it requires the customer to purchase and activate individual licenses for each product and feature they want to use. This can result in a large number of licenses to track and renew, as well as compatibility issues between different products and versions. A La Carte licensing also does not provide the benefits of Cisco's Software Buying Programs, such as financial predictability, access to incentives, and subscription co-termination1.