The most common model I see these days is a lifetime license and one/two year of free updates with it. Once your free updates are over, you can keep using the l

The most common model I see these days is a lifetime license and one/two year of free updates with it. Once your free updates are over, you can keep using the last covered version forever, or purchase another year of updates for a discount (20% to 40% off of the original license price). This has 2 advantages: - You can buy the additional updates whenever you want in the future so it's leaner than a subscription. - It also makes sure you get at least 1 year of updates, as opposed to unknown time period of updates when the licenses are tied to a major version.