<s>
Service	B-Application
Component	I-Application
Architecture	I-Application
(	O
SCA	O
)	O
is	O
a	O
software	O
technology	O
designed	O
to	O
provide	O
a	O
model	O
for	O
applications	O
that	O
follow	O
service-oriented	O
architecture	O
principles	O
.	O
</s>
<s>
The	O
technology	O
,	O
created	O
by	O
major	O
software	O
vendors	O
,	O
including	O
IBM	O
,	O
Oracle	B-Application
Corporation	I-Application
and	O
TIBCO	O
Software	O
,	O
encompasses	O
a	O
wide	O
range	O
of	O
technologies	O
and	O
as	O
such	O
is	O
specified	O
in	O
independent	O
specifications	O
to	O
maintain	O
programming	O
language	O
and	O
application	O
environment	O
neutrality	O
.	O
</s>
<s>
Many	O
times	O
it	O
uses	O
an	O
enterprise	B-Application
service	I-Application
bus	I-Application
(	O
ESB	O
)	O
.	O
</s>
<s>
The	O
original	O
partners	O
announced	O
on	O
November	O
30	O
,	O
2005	O
were	O
:	O
BEA	O
Systems	O
,	O
IBM	O
,	O
IONA	O
Technologies	O
,	O
Oracle	B-Application
Corporation	I-Application
,	O
SAP	B-Application
AG	I-Application
,	O
Sybase	B-Application
,	O
Xcalia	O
and	O
Zend	O
Technologies	O
.	O
</s>
<s>
Additional	O
members	O
announced	O
on	O
July	O
26	O
,	O
2006	O
were	O
Cape	O
Clear	O
,	O
Interface21	B-Application
,	O
Primeton	O
Technologies	O
,	O
Progress	O
Software	O
,	O
Red	O
Hat	O
,	O
Rogue	O
Wave	O
Software	O
,	O
Software	O
AG	O
,	O
Sun	O
Microsystems	O
and	O
TIBCO	O
Software	O
.	O
</s>
<s>
Marketing	O
firm	O
Gartner	O
Group	O
published	O
a	O
short	O
brief	O
that	O
promoted	O
the	O
SCA	O
and	O
its	O
included	O
technology	O
of	O
Service	B-Application
Data	I-Application
Objects	I-Application
(	O
SDO	O
)	O
in	O
December	O
2005	O
.	O
</s>
<s>
Focusing	O
on	O
portability	O
(	O
instead	O
of	O
interoperability	O
)	O
,	O
making	O
it	O
vulnerable	O
to	O
repeating	O
CORBA	B-Architecture
's	O
mistakes	O
.	O
</s>
<s>
It	O
is	O
the	O
method	O
that	O
provides	O
the	O
highest	O
degree	O
of	O
component	O
autonomy	O
,	O
compared	O
to	O
older	O
"	O
mediation	O
"	O
(	O
e.g.	O
,	O
JBI	B-Language
)	O
or	O
"	O
Invocation	O
"	O
method	O
used	O
in	O
JCA	B-Language
,	O
as	O
explained	O
by	O
an	O
architect	O
at	O
SAP	B-Application
.	O
</s>
<s>
The	O
SCA	O
Assembly	O
Model	O
consists	O
of	O
a	O
series	O
of	O
artifacts	O
,	O
which	O
are	O
defined	O
by	O
elements	O
contained	O
in	O
XML	B-Protocol
files	O
.	O
</s>
<s>
An	O
SCA	O
runtime	O
may	O
have	O
other	O
non-standard	O
representations	O
of	O
the	O
artifacts	O
represented	O
by	O
these	O
XML	B-Protocol
files	O
,	O
and	O
may	O
allow	O
for	O
the	O
configuration	O
of	O
systems	O
to	O
be	O
modified	O
dynamically	O
.	O
</s>
<s>
However	O
,	O
the	O
XML	B-Protocol
files	O
define	O
the	O
portable	O
representation	O
of	O
the	O
SCA	O
artifacts	O
.	O
</s>
<s>
To	O
help	O
build	O
and	O
configure	O
the	O
SCA	O
System	O
,	O
Composites	O
can	O
be	O
used	O
as	O
component	O
implementations	O
,	O
in	O
the	O
same	O
way	O
as	O
Java	B-Language
classes	O
or	O
BPEL	O
processes	O
.	O
</s>
