Some folks find this sort of deadline makes them all the more interested to consider the prospect of moving to the open-source CFML engine, Lucee.But note that the FusionReactor folks (also CF resellers) have a deal on until Feb 28, where you CAN get an upgrade discount to move to CF2021 from CF2016 or earlier. If you may still be running CF2016 or earlier, Adobe offers no upgrade discount to CF2021 for you.Buying CF2021 now will also allow you to get that upgrade discount on moving to CF2023 when it comes out. As for the cost to upgrade, note that Adobe offers an upgrade discount to the current version from the preceding version, so there is an upgrade discount to move from CF2018 to 2021.As for migration of your app from earlier versions to CF2021, I cover most of what you need to know in a (recorded) talk on Migrating apps to ColdFusion 2021 from earlier versions, or again I can help you directly.I can help you directly with that if interested, usually very quickly (as in minutes). For some folks, that's trivial to do, while others may struggle. You can even configure the web server connector (for IIS or Apache) to allow some sites to run on one CF version while another site/s run against another CF version.As long as the current version is running when you install another, the new one gets different ports so that both can even run at the same time (as long as your machine has the resources). As with any CF version, you can run CF2021 alongside of a CF2018 installation (or a CF2016 installation, and so on).
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