Apparent similarity in the appearance of two entities does not imply that they are exactly the same in all respects. The same logic applies to the issue of SDET vs. Automation Engineer as well. Both IT professionals happen to be associated with the QA Engineer Course phase of the SDLC. Moreover, they do have certain common responsibilities, leading many to use the two terms interchangeably. However, technically, this is not correct. Consequently, the difference between SDET and Automation Engineer is what shall be accounted for in this blog.