A one-time perpetual subscriber-capacity license.
Commercial Swift BNG licensing is based on provisioned subscriber capacity, not concurrent online sessions. The licensed capacity itself does not expire.
Capacity stays licensed
Annual Service expiry does not expire the perpetual license, disconnect existing subscribers or disable the currently installed software version.
Upgrade when you need more
When provisioned capacity reaches the licensed limit, additional subscriber creation requires a capacity upgrade. Existing subscribers continue to operate.
Annual Service is separate
Annual Service controls eligibility for software updates and assisted support. It does not replace or convert the perpetual license into a subscription.