BRIEF-Vietnam's Vingroup says Q1 net profit drops 54 pct y/y
* Says Q1 net profit drops 54 percent y/y to 593 billion dong ($26.1 million) Further company coverage:
Oct 14 MUI Properties Bhd
* Wong Shuk Fuen resigns as cfo
SAN FRANCISCO, April 28 Amazon.com Inc's ventures far beyond online retail, from cloud computing to movie making, are raising questions among corporate strategy experts about its focus.