UDEMY 
Udemy is a global marketplace for learning and teaching online where more than 15 million students are mastering new skills and achieving their goals by learning from an extensive library of over 45,000 courses taught by expert instructors
COURSERA 
Coursera provides online access to the world's best education, from top universities like Yale, Johns Hopkins, Michigan, and top companies 

Courses for Skills Upgrading Online Exam Certification
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