<s>
Deltacloud	B-Application
is	O
an	O
application	B-Application
programming	I-Application
interface	I-Application
(	O
API	B-Application
)	O
developed	O
by	O
Red	O
Hat	O
and	O
the	O
Apache	O
Software	O
Foundation	O
that	O
abstracts	O
differences	O
between	O
cloud	B-Architecture
computing	I-Architecture
implementations	O
.	O
</s>
<s>
Each	O
Infrastructure-as-a-Service	O
cloud	O
existing	O
today	O
provides	O
its	O
own	O
API	B-Application
.	O
</s>
<s>
The	O
purpose	O
of	O
Deltacloud	B-Application
is	O
to	O
provide	O
one	O
unified	O
REST-based	O
API	B-Application
that	O
can	O
be	O
used	O
to	O
manage	O
services	O
on	O
any	O
cloud	O
.	O
</s>
<s>
As	O
of	O
June	O
2012	O
,	O
drivers	O
exist	O
for	O
the	O
following	O
cloud	O
platforms	O
:	O
Amazon	B-General_Concept
EC2	I-General_Concept
,	O
Fujitsu	B-General_Concept
Global	I-General_Concept
Cloud	I-General_Concept
Platform	I-General_Concept
,	O
GoGrid	B-General_Concept
,	O
OpenNebula	B-Language
,	O
Rackspace	B-Application
,	O
RHEV-M	B-Application
,	O
RimuHosting	O
,	O
Terremark	O
and	O
VMware	O
vCloud	B-General_Concept
.	O
</s>
<s>
Next	O
to	O
the	O
'	O
classic	O
 '	O
front-end	O
,	O
it	O
also	O
offers	O
CIMI	B-General_Concept
and	O
EC2	O
front-ends	O
.	O
</s>
<s>
Deltacloud	B-Application
is	O
used	O
in	O
applications	O
such	O
as	O
Aeolus	O
to	O
prevent	O
the	O
need	O
to	O
implement	O
cloud-specific	O
logic	O
.	O
</s>
<s>
On	O
May	O
17	O
,	O
2010	O
Red	O
Hat	O
contributed	O
Deltacloud	B-Application
to	O
the	O
Apache	B-Application
Incubator	I-Application
project	O
.	O
</s>
<s>
In	O
July	O
2013	O
Fujitsu	O
and	O
VMware	O
used	O
Deltacloud	B-Application
in	O
a	O
demonstration	O
of	O
CIMI	B-General_Concept
at	O
a	O
Management	O
Developers	O
Conference	O
to	O
manage	O
their	O
cloud	O
infrastructure	O
.	O
</s>
