What are the key concepts covered in each SCM course? April 13, 2021 14:37 Updated The Key Concepts for all courses are continually updated here (pdf download). Related articles How much does the MITx MicroMasters program credential in SCM cost, and is there financial aid? How much time should I expect to spend on the SCM courses and credential? What are the five online courses required for the MITx MicroMasters program credential in SCM? May I take an SCx course out of order even if I have not taken its prerequisite? May I take two SCx courses at the same time?