[Item] Administration [Multiprocessor] One organization [Cluster(Multicomputer)] One organization [Distributed system] 
Many organizations
C o m p l e t e c o m p u t e r
F u l l s e t p e r n o d e
P o s s i b l e w o r l d w i d e
T r a d i t i o n n e t w o r k
P o s s i b l y a l l d i f f e r e n t
E a c h n o d e h a s o w n
M a n y o r g a n i z a t i o n s