<s>
An	O
interface	B-General_Concept
description	I-General_Concept
language	I-General_Concept
or	O
interface	B-General_Concept
definition	I-General_Concept
language	I-General_Concept
(	O
IDL	O
)	O
,	O
is	O
a	O
generic	O
term	O
for	O
a	O
language	O
that	O
lets	O
a	O
program	O
or	O
object	O
written	O
in	O
one	O
language	O
communicate	O
with	O
another	O
program	O
written	O
in	O
an	O
unknown	O
language	O
.	O
</s>
<s>
IDLs	O
describe	O
an	O
interface	O
in	O
a	O
language-independent	B-Language
way	O
,	O
enabling	O
communication	O
between	O
software	B-Architecture
components	I-Architecture
that	O
do	O
not	O
share	O
one	O
language	O
,	O
for	O
example	O
,	O
between	O
those	O
written	O
in	O
C++	B-Language
and	O
those	O
written	O
in	O
Java	B-Language
.	O
</s>
<s>
IDLs	O
are	O
commonly	O
used	O
in	O
remote	B-Operating_System
procedure	I-Operating_System
call	I-Operating_System
software	O
.	O
</s>
<s>
In	O
these	O
cases	O
the	O
machines	O
at	O
either	O
end	O
of	O
the	O
link	O
may	O
be	O
using	O
different	O
operating	B-General_Concept
systems	I-General_Concept
and	O
computer	O
languages	O
.	O
</s>
<s>
Software	O
systems	O
based	O
on	O
IDLs	O
include	O
Sun	O
's	O
ONC	B-Protocol
RPC	I-Protocol
,	O
The	B-Application
Open	I-Application
Group	I-Application
's	O
Distributed	B-Operating_System
Computing	I-Operating_System
Environment	I-Operating_System
,	O
IBM	O
's	O
System	B-Application
Object	I-Application
Model	I-Application
,	O
the	O
Object	B-Architecture
Management	I-Architecture
Group	I-Architecture
's	O
CORBA	B-Architecture
(	O
which	O
implements	O
OMG	B-Architecture
IDL	I-Architecture
,	O
an	O
IDL	O
based	O
on	O
DCE/RPC	O
)	O
and	O
Data	B-Application
Distribution	I-Application
Service	I-Application
,	O
Mozilla	B-Operating_System
's	O
XPCOM	B-Application
,	O
Microsoft	O
's	O
Microsoft	B-General_Concept
RPC	I-General_Concept
(	O
which	O
evolved	O
into	O
COM	B-Application
and	O
DCOM	B-Operating_System
)	O
,	O
Facebook	B-Application
's	O
Thrift	B-Protocol
and	O
WSDL	O
for	O
Web	O
services	O
.	O
</s>
<s>
:	O
Interface	B-General_Concept
description	I-General_Concept
language	I-General_Concept
for	O
the	O
Fuchsia	B-Language
Operating	I-Language
System	I-Language
designed	O
for	O
writing	O
app	O
components	O
in	O
C	B-Language
,	O
C++	B-Language
,	O
Dart	B-Language
,	O
Go	B-Application
and	O
Rust	B-Application
.	O
</s>
<s>
OpenAPI	B-Architecture
Specification	I-Architecture
:	O
a	O
standard	O
for	O
REST	O
interfaces	O
,	O
used	O
by	O
Swagger	B-Application
and	O
other	O
technologies	O
.	O
</s>
<s>
:	O
An	O
AWS-invented	O
protocol-agnostic	O
interface	B-General_Concept
definition	I-General_Concept
language	I-General_Concept
.	O
</s>
