With our Enterprise Edition licensing, we offer annual payments for 1 year by default on all license plans.
For our the Strapi Enterprise plan we can do custom terms based on needs and requirements, to discuss options we urge you to contact our sales team at sales@strapi.io.
Please note that our licensing system is always subject to change and these options could be adjusted in the future. For the most up to date information we suggest you visit our pricing page. If you have any questions you can always contact our sales team or feel free to open a ticket.