<s>
SABSA	O
(	O
Sherwood	B-Architecture
Applied	I-Architecture
Business	I-Architecture
Security	I-Architecture
Architecture	I-Architecture
)	O
is	O
a	O
model	B-Application
and	O
methodology	O
for	O
developing	O
a	O
risk-driven	O
enterprise	B-Architecture
information	I-Architecture
security	I-Architecture
architecture	I-Architecture
and	O
service	O
management	O
,	O
to	O
support	O
critical	O
business	O
processes	O
.	O
</s>
<s>
It	B-General_Concept
was	O
developed	O
independently	O
from	O
the	O
Zachman	B-Library
Framework	I-Library
,	O
but	O
has	O
a	O
similar	O
structure	O
.	O
</s>
<s>
The	O
primary	O
characteristic	O
of	O
the	O
SABSA	O
model	B-Application
is	O
that	O
everything	O
must	O
be	O
derived	O
from	O
an	O
analysis	O
of	O
the	O
business	O
requirements	O
for	O
security	O
,	O
especially	O
those	O
in	O
which	O
security	O
has	O
an	O
enabling	O
function	O
through	O
which	O
new	O
business	O
opportunities	O
can	O
be	O
developed	O
and	O
exploited	O
.	O
</s>
<s>
The	O
process	O
analyzes	O
the	O
business	O
requirements	O
at	O
the	O
outset	O
,	O
and	O
creates	O
a	O
chain	O
of	O
traceability	B-Device
through	O
the	O
strategy	O
and	O
concept	O
,	O
design	O
,	O
implementation	O
,	O
and	O
ongoing	O
‘	O
manage	O
and	O
measure’	O
phases	O
of	O
the	O
lifecycle	O
to	O
ensure	O
that	O
the	O
business	O
mandate	O
is	O
preserved	O
.	O
</s>
<s>
The	O
model	B-Application
is	O
layered	O
,	O
with	O
the	O
top	O
layer	O
being	O
the	O
business	O
requirements	O
definition	O
stage	O
.	O
</s>
<s>
The	O
SABSA	O
model	B-Application
itself	O
is	O
generic	O
and	O
can	O
be	O
the	O
starting	O
point	O
for	O
any	O
organization	O
,	O
but	O
by	O
going	O
through	O
the	O
process	O
of	O
analysis	O
and	O
decision-making	O
implied	O
by	O
its	O
structure	O
,	O
it	B-General_Concept
becomes	O
specific	O
to	O
the	O
enterprise	O
,	O
and	O
is	O
finally	O
highly	O
customized	O
to	O
a	O
unique	O
business	O
model	B-Application
.	O
</s>
<s>
It	B-General_Concept
becomes	O
in	O
reality	O
the	O
enterprise	O
security	O
architecture	O
,	O
and	O
it	B-General_Concept
is	O
central	O
to	O
the	O
success	O
of	O
a	O
strategic	O
program	O
of	O
information	O
security	O
management	O
within	O
the	O
organization	O
.	O
</s>
<s>
SABSA	O
is	O
a	O
particular	O
example	O
of	O
a	O
methodology	O
that	O
can	O
be	O
used	O
both	O
for	O
IT	B-General_Concept
(	O
information	B-General_Concept
technology	I-General_Concept
)	O
and	O
OT	O
(	O
operational	O
technology	O
)	O
environments	O
.	O
</s>
<s>
Note	O
:	O
The	O
above	O
is	O
the	O
original	O
SABSA	O
Matrix	O
,	O
which	O
is	O
still	O
valid	O
today	O
,	O
but	O
it	B-General_Concept
has	O
been	O
expanded	O
by	O
a	O
comprehensive	O
service	O
management	O
matrix	O
and	O
updated	O
in	O
some	O
detail	O
and	O
terminology	O
areas	O
.	O
</s>
