The difference between a product update and a product upgrade is that the product upgrades contain new features and functionality while a product update contains bug fixes. The upgrades also increase the major or minor version of the product. For example, an upgrade changes the version from 1.0 to 1.1.
Secure API Manager provides an automated process to upgrade all of the components in a test environment. However, the upgrade process for components in a production environment requires multiple steps. For more information about upgrade procedures, see the Secure API Manager Release Notes.