What approach should be used to create applications when traffic can be easily identified by domains?

The most effective approach for creating applications in scenarios where traffic can be easily identified by domains is auto-injection. This method allows automatic monitoring of application traffic without requiring manual intervention, making it more efficient and less prone to human error.

With auto-injection, the necessary monitoring code is seamlessly injected into the application. This ensures that the relevant data is captured consistently and accurately across all defined domains. It simplifies the deployment process, particularly in environments where traffic patterns change frequently or where multiple applications are involved. Auto-injection can dynamically adapt to new deployments and changes, providing real-time insights without requiring manual configuration each time a new domain is introduced.

In contrast, manual insertion would require extensive manual input and adjustments, which can be cumbersome and might lead to inconsistencies. Browser extension injection is limited in scope and only captures traffic from users who have the extensions installed, making it less efficient for widespread monitoring across multiple domains. Generic pattern mapping lacks the specificity and accuracy required for tracking domain-based traffic effectively, as it may not capture all the nuances of different applications interacting with various domains.