[Definition] This is the ability to adopt a portion of the Composite Application Library. You can choose only certain capabilities, incrementally adopt capabilities, and enable or disable features. [Quality] 
Subsetability
S u b s e t a b i l i t y
L e a r n a b i l i t y
E x t e n s i b i l i t y
C o m p a t i b i l i t y
S i m p l i c i t y
T e s t a b i l i t y
P e r f o r m a n c e
S c a l a b i l i t y
U p g r a d e a b i l i t y