Which is a recommended approach for keeping extensions clean?

Using the three-tier model is recognized as a best practice for keeping extensions clean in the context of SAP processes. This model organizes the system architecture into three distinct layers: the presentation layer, the application layer, and the database layer. Each layer has specific responsibilities and facilitates a clear separation of concerns.

By implementing the three-tier model, developers can ensure that their custom extensions or modifications do not interfere with the core functionalities of the SAP system. This structured approach helps maintain system integrity and performance, isolates changes to specific layers, and makes it easier to manage updates or troubleshoot issues. As a result, it provides a cleaner, more maintainable solution when working with extensions.

Choosing to avoid extensions entirely or heavily customizing the system can lead to significant complications, such as difficulties in upgrading or maintaining the system over time. Using internal tools exclusively may limit the capabilities of the extensions, and maximizing custom modifications can create a tangled network of changes that complicate the maintenance and operational efficiency of the SAP environment. Therefore, adopting the three-tier model strikes a balance between extending functionality and maintaining a clean, manageable system architecture.