You have options for your IoT deployment. You can select versatile capabilities like embedded Universal Integrated Circuit Cards (eUICCs) or innovative, fit-for-purpose solutions. How you pay for the connectivity of those deployments should be one of your choices, too.
Postpaid plans, in which users are invoiced for actual usage at the end of the billing cycle, have dominated the market. However, prepaid plans, for which users make a one-time payment for a set amount of data, are rising. As connected devices increase, IoT device manufacturers and the service providers that use them need more ways to deliver — and pay for — the best connectivity.
Each plan has its advantages. Neither is better than the other. One plan could be better for a specific device, business plan, use case or deployment. Business requirements should be the determining factor behind your choice.