The “[AZ-900]: Microsoft Azure Fundamentals” training program by K21Academy is very adequate, concise, and well managed. The trainer is Microsoft certified and very knowledgeable on the subject.
On top of that, the way K21 Academy and Atul Kumar treats trainees is unbelievable.
They put all efforts to make sure the trainees understand the concepts very deeply and help to clear the certification exam. They have a dedicated WhatsApp group so that trainees can share the training and exam related queries. Because of their and my dedication I was able to clear my AZ-900 Certification successfully.