Which of the following is NOT a way to manage applications in Appian?

Data normalization refers to the process of organizing data in a database to minimize redundancy and improve data integrity. While it is an important aspect of database design and management, it is not a method specifically used for managing applications within the Appian platform.

In contrast, the import/export of applications allows users to transfer applications and their components between environments or backups easily. App security is critical for managing user access to applications and ensuring that sensitive data is adequately protected. Properties management in Appian involves configuring application properties and settings that control how applications behave.

Thus, data normalization, although significant in a broader data management context, does not fall under the category of application management methods within the Appian environment. This distinction highlights why it is not considered a valid choice compared to the other options listed.