<s>
is	O
a	O
software	O
integration	O
pattern	O
that	O
reduces	O
the	O
chances	O
for	O
breaking	O
a	O
build	O
(	O
and	O
often	O
its	O
associated	O
tests	O
)	O
by	O
committing	O
changes	O
into	O
the	O
main	B-General_Concept
branch	I-General_Concept
of	O
version	B-Architecture
control	I-Architecture
.	O
</s>
<s>
To	O
perform	O
a	O
gated	B-Application
commit	I-Application
the	O
software	O
developer	O
must	O
request	O
a	O
gated	B-Application
commit	I-Application
from	O
the	O
CI	O
server	O
before	O
committing	O
the	O
actual	O
changes	O
to	O
a	O
central	O
location	O
.	O
</s>
<s>
The	O
CI	O
server	O
merges	O
the	O
local	O
changes	O
with	O
the	O
head	O
of	O
the	O
master	B-General_Concept
branch	I-General_Concept
and	O
performs	O
the	O
validations	O
(	O
build	O
and	O
tests	O
)	O
that	O
make	O
up	O
the	O
gate	O
.	O
</s>
<s>
As	O
an	O
alternative	O
this	O
pattern	O
can	O
be	O
realized	O
using	O
different	O
branches	B-General_Concept
in	O
version	B-Architecture
control	I-Architecture
.	O
</s>
<s>
For	O
instance	O
,	O
GitHub	B-Application
can	O
force	O
all	O
commits	O
to	O
a	O
branch	O
B	O
to	O
be	O
merge	O
commits	O
from	O
pull	O
requests	O
which	O
have	O
successfully	O
been	O
built	O
on	O
the	O
CI	O
server	O
and	O
are	O
up-to-date	O
(	O
i.e.	O
</s>
