I've noticed measurable benefits and return on investment by choosing Google App Engine.
Google App Engine integrates seamlessly with most devices, offering auto-scaling for efficient user growth. It allows self-management without infrastructure hassles and supports open-source development for flexibility. Deployment rollback and tracking are reliable. However, data consumption could be better, customization options are limited, and support services need improvement. Its pricing is hard to assess, and migration to other providers is challenging due to proprietary technologies.