What are the best certification courses for automation testing?

Can anyone please tell me what are the best certification courses for automation testing.

Software Testing

Amazon Web Services

Platform : Udacity

Timeline : 1 Month

Skill Level : Intermediate

Instructors : John Regehr and Sean Bennett

Software Testing Fundamentals

University of Maryland

Platform : edX

Timeline : 8 weeks (8-10 hours a week)

Skill Level : Introductory

Instructors : Dr Michael Scott Brown and Dr Renata Rand McFadden

Software Testing Management

University of Maryland

Platform : edX

Timeline : 8 weeks (8-10 hours a week)

Skill Level : Introductory

Instructors : Dr Michael Scott Brown and Dr Renata Rand McFadden and Dr Mir Mohammed Assadullah

Software Engineering Essentials

Technische Universität München

Platform : edX

Timeline : 8 weeks (5 to 7 hours a week)

Skill Level : Intermediate

Instructors : Bernd Bruegge, Stephan Krusche and Andreas Seitz

Testing with Agile

University of Virginia

Platform : Coursera

Timeline : 3 weeks (2-4 hours a week)

Instructor : Alex Cowan