What type of licensing does Esri Ireland offer?
Esri offers perpetual and subscription licensing.
Perpetual licensing carries optional yearly maintenance that provides you with software updates, technical support, and ArcGIS Online access. If maintenance is not renewed, the software will remain licensed at the last version under maintenance.
Subscription-based plans come with all the benefits of maintenance as long as you renew the subscription. The license will time-out if not renewed.