Google introduced this Optimising AdSense Course for AdSense publishers to earn more money from your own website by displaying ads on your web pages. To enroll in this course one need to submit the name(to be written on the certificate), AdSense publisher ID, website URL, choose the reason for taking this course.
After completing final Assessment in Optimizing AdSense course certificate will be awarded.
This Google AdSense optimization course helps publishers for choosing different ad sizes, to improving page load speed, to setting up AdSense A/B experiments.
This is what the certificate I have earned on completion of this course
Google Adsense optimization course videos, activities, assessments will show the best ways for AdSense publishers to increase Google Adsense revenue.
You can know more about this Optimizing AdSense course and certificate by watching this video.
Note: at this moment this certification course is not available.