<s>
Software	B-General_Concept
architecture	I-General_Concept
analysis	I-General_Concept
method	I-General_Concept
(	O
SAAM	O
)	O
is	O
a	O
method	O
used	O
in	O
software	B-Architecture
architecture	I-Architecture
to	O
evaluate	O
a	O
system	O
architecture	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
documented	O
software	B-General_Concept
architecture	I-General_Concept
analysis	I-General_Concept
method	I-General_Concept
,	O
and	O
was	O
developed	O
in	O
the	O
mid	O
1990s	O
to	O
analyze	O
a	O
system	O
for	O
modifiability	O
,	O
but	O
it	O
is	O
useful	O
for	O
testing	O
any	O
non-functional	O
aspect	O
.	O
</s>
<s>
SAAM	O
was	O
a	O
precursor	O
to	O
the	O
architecture	B-Architecture
tradeoff	I-Architecture
analysis	I-Architecture
method	I-Architecture
.	O
</s>
