<s>
IBM	B-Application
Enterprise	I-Application
Identity	I-Application
Mapping	I-Application
(	O
EIM	O
)	O
is	O
a	O
framework	O
from	O
IBM	O
that	O
allows	O
the	O
mapping	O
of	O
different	O
identities	O
(	O
user	O
IDs	O
)	O
on	O
various	O
platforms	O
,	O
user	O
repositories	O
and	O
applications	O
to	O
a	O
single	O
identity	O
.	O
</s>
<s>
It	O
can	O
be	O
used	O
with	O
a	O
range	O
of	O
authentication	O
mechanisms	O
such	O
as	O
Kerberos	B-Protocol
(	O
protocol	O
)	O
(	O
e.g.	O
</s>
<s>
as	O
used	O
by	O
MS	O
Active	B-Protocol
Directory	I-Protocol
)	O
to	O
allow	O
one	O
user	O
repository	O
to	O
authenticate	O
the	O
user	O
and	O
for	O
this	O
information	O
to	O
be	O
passed	O
via	O
a	O
secure	O
token	O
to	O
another	O
platform	O
for	O
authorisation	O
even	O
when	O
the	O
User	O
IDs	O
differ	O
.	O
</s>
<s>
It	O
is	O
available	O
free	O
of	O
charge	O
on	O
all	O
IBM	O
server	O
platforms	O
including	O
those	O
running	O
z/OS	B-Application
,	O
IBM	B-Application
i	I-Application
,	O
IBM	B-Application
AIX	I-Application
,	O
Linux	B-Application
,	O
PowerLinux	B-Application
and	O
Windows	B-Device
Server	I-Device
plus	O
earlier	O
releases	O
such	O
as	O
i5/OS	B-Application
.	O
</s>
<s>
In	O
the	O
case	O
of	O
IBM	B-Application
i	I-Application
both	O
EIM	O
and	O
Kerberos	B-Protocol
authentication	O
are	O
an	O
integral	O
part	O
of	O
the	O
OS	O
.	O
</s>
