Rule: Prefer cleaner @SlingServlet annotation.

[kumesh65]

These days most of the AEM projects are using OSGI-DS6 or greater annotations for services an all but as per this AEM custom rule it is still being recommended to to use @SlingServlet annotation, which is actually a SCR annotation, to create a sling servlet. If anyone can explain a bit .
Thank you
Umesh Thakur