<s>
Apache	B-Language
Beam	I-Language
is	O
an	O
open	B-Application
source	I-Application
unified	O
programming	O
model	O
to	O
define	O
and	O
execute	O
data	O
processing	O
pipelines	B-Operating_System
,	O
including	O
ETL	O
,	O
batch	B-General_Concept
and	O
stream	B-Application
(	O
continuous	O
)	O
processing	O
.	O
</s>
<s>
Beam	O
Pipelines	B-Operating_System
are	O
defined	O
using	O
one	O
of	O
the	O
provided	O
SDKs	B-Application
and	O
executed	O
in	O
one	O
of	O
the	O
Beam	O
’s	O
supported	O
runners	O
(	O
distributed	B-Architecture
processing	I-Architecture
back-ends	O
)	O
including	O
Apache	B-Application
Flink	I-Application
,	O
Apache	B-Application
Samza	I-Application
,	O
Apache	B-Language
Spark	I-Language
,	O
and	O
Google	B-General_Concept
Cloud	I-General_Concept
Dataflow	I-General_Concept
.	O
</s>
<s>
Apache	B-Language
Beam	I-Language
is	O
one	O
implementation	O
of	O
the	O
Dataflow	O
model	O
paper	O
.	O
</s>
<s>
The	O
Dataflow	O
model	O
is	O
based	O
on	O
previous	O
work	O
on	O
distributed	B-Architecture
processing	I-Architecture
abstractions	O
at	O
Google	B-Application
,	O
in	O
particular	O
on	O
FlumeJava	O
and	O
Millwheel	O
.	O
</s>
<s>
Google	B-Application
released	O
an	O
open	O
SDK	O
implementation	O
of	O
the	O
Dataflow	O
model	O
in	O
2014	O
and	O
an	O
environment	O
to	O
execute	O
Dataflows	O
locally	O
(	O
non-distributed	O
)	O
as	O
well	O
as	O
in	O
the	B-Application
Google	I-Application
Cloud	O
Platform	O
service	O
.	O
</s>
<s>
Apache	B-Language
Beam	I-Language
makes	O
minor	O
releases	O
every	O
6	O
weeks	O
.	O
</s>
