<s>
The	O
first	O
version	O
of	O
the	O
Enterprise	B-Architecture
Collaboration	I-Architecture
Architecture	I-Architecture
(	O
ECA	O
)	O
has	O
been	O
published	O
by	O
the	O
Object	B-Architecture
Management	I-Architecture
Group	I-Architecture
(	O
OMG	O
)	O
in	O
2001	O
.	O
</s>
<s>
The	O
vision	O
of	O
the	O
(	O
ECA	O
)	O
is	O
to	O
simplify	O
the	O
development	O
of	O
component	O
based	O
and	O
services	O
oriented	O
systems	O
by	O
providing	O
a	O
modeling	O
framework	O
aligned	O
with	O
the	O
model-driven	B-Architecture
architecture	I-Architecture
(	O
MDA	O
)	O
of	O
the	O
Object	B-Architecture
Management	I-Architecture
Group	I-Architecture
(	O
OMG	O
)	O
.	O
</s>
<s>
The	O
ECA	O
specifies	O
a	O
set	O
of	O
UML	B-Language
models	O
used	O
to	O
model	O
different	O
aspects	O
(	O
e.g.	O
</s>
<s>
The	O
ECA	O
comprises	O
four	O
UML	B-Language
models	O
:	O
</s>
<s>
The	O
ECA	O
views	O
are	O
directly	O
taken	O
from	O
the	O
Reference	O
Model	O
of	O
Open	B-Operating_System
Distributed	I-Operating_System
Processing	I-Operating_System
RM-ODP	B-Operating_System
:	O
</s>
