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What is the difference between upgrade, update and migration?

Below you will find an explanation of commonly used phrases related to installing CodeTwo products.

Version of the program

The version of the program consists of 3 numbers separated by dots, e.g. CodeTwo Exchange Rules 2007 2.2.7. The version number is always provided on product download pages Fig. 1.

Fig. 1. The version of the program on product download pages.


An upgrade is when you reinstall the application using a newer version that has a higher first figure e.g. an upgrade from 1.2.3 to 2.0.0. Upgrades are typically payable and it is safe to assume you should not install a version with higher first figure without confirming your eligibility to such action with our Support team.

If you were asked by CodeTwo Customer Support to reinstall the software with the newest available installer from our website and were not instructed specifically to do an upgrade, please make sure you are using the installer with the same first figure as the version you have purchased your license for, i.e. please perform an update, see below.


An update is when you reinstall the application using a newer version that has the same first figure e.g. an update from 1.2.3 to 1.3.0. Updates are free of charge for all customers – a valid support contract is not necessary.

You should update your installation on regular basis to make sure you always have a version of the software with all new features included and all known bugs removed.


A migration is when you stop using an application in order to move to another product on preferential terms e.g. you drop CodeTwo Exchange Rules 2007 in order to migrate to CodeTwo Exchange Rules PRO. A migration is always payable but priced less than repurchasing.

If you have any doubts about this topic please contact CodeTwo Customer Support.

See also:

  • Applies to: Licensing
  • Categories: How-To
  • Last modified: 2015-04-22
  • Created: 2010-12-09
  • ID: 164
  • Keywords: upgrade, update, migration, version, programs
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