A commitment period is the minimum time a user agrees to remain subscribed before cancelling or changing a plan. In digital services, it works like a lock-in: the customer gets access now, but accepts a fixed term in return for pricing or feature advantages.
In cyber security, commitment periods matter because they shape how accounts, billing, and access controls are enforced. Attackers may try to exploit trial-to-paid transitions, abuse cancellation windows, or resell accounts that are locked into a long term. Defenders use commitment periods together with identity checks, payment verification, and entitlement controls to reduce fraud and unauthorized sharing. The term is not a security control by itself, but it affects the business rules that security systems must protect.