<s>
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
is	O
a	O
RESTful	B-Protocol
online	B-Application
file	I-Application
storage	I-Application
web	O
service	O
for	O
storing	O
and	O
accessing	O
data	O
on	O
Google	B-General_Concept
Cloud	I-General_Concept
Platform	I-General_Concept
infrastructure	O
.	O
</s>
<s>
The	O
service	O
combines	O
the	O
performance	O
and	O
scalability	O
of	O
Google	B-Application
's	I-Application
cloud	O
with	O
advanced	O
security	O
and	O
sharing	O
capabilities	O
.	O
</s>
<s>
It	O
is	O
an	O
Infrastructure	O
as	O
a	O
Service	O
(	O
IaaS	O
)	O
,	O
comparable	O
to	O
Amazon	B-General_Concept
S3	I-General_Concept
.	O
</s>
<s>
Contrary	O
to	O
Google	B-Application
Drive	I-Application
and	O
according	O
to	O
different	O
service	O
specifications	O
,	O
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
appears	O
to	O
be	O
more	O
suitable	O
for	O
enterprises	O
.	O
</s>
<s>
User	O
activation	O
is	O
resourced	O
through	O
the	O
API	B-General_Concept
Developer	O
Console	O
.	O
</s>
<s>
Google	B-Application
Account	O
holders	O
must	O
first	O
access	O
the	O
service	O
by	O
logging	O
in	O
and	O
then	O
agreeing	O
to	O
the	O
Terms	O
of	O
Service	O
,	O
followed	O
by	O
enabling	O
a	O
billing	O
structure	O
.	O
</s>
<s>
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
stores	O
objects	O
(	O
originally	O
limited	O
to	O
100	O
GiB	O
,	O
currently	O
up	O
to	O
5	O
TiB	O
)	O
in	O
projects	O
which	O
are	O
organized	O
into	O
buckets	O
.	O
</s>
<s>
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
offers	O
four	O
storage	O
classes	O
,	O
identical	O
in	O
throughput	O
,	O
latency	O
and	O
durability	O
.	O
</s>
<s>
Interoperability	O
-	O
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
is	O
interoperable	O
with	O
other	O
cloud	O
storage	O
tools	O
and	O
libraries	O
that	O
work	O
with	O
services	O
such	O
as	O
Amazon	B-General_Concept
S3	I-General_Concept
and	O
Eucalyptus	B-General_Concept
Systems	I-General_Concept
.	O
</s>
<s>
Consistency	O
-	O
Upload	O
operations	O
to	O
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
are	O
atomic	O
,	O
providing	O
strong	O
read-after-write	O
consistency	O
for	O
all	O
upload	O
operations	O
.	O
</s>
<s>
Access	O
Control	O
-	O
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
uses	O
access	O
control	O
lists	O
(	O
ACLs	O
)	O
to	O
manage	O
object	O
and	O
bucket	O
access	O
.	O
</s>
<s>
For	O
example	O
,	O
a	O
specific	O
user	O
or	O
a	O
group	O
of	O
users	O
(	O
such	O
as	O
Google	B-Application
account	O
email	O
addresses	O
,	O
Google	B-Application
Apps	O
domain	O
,	O
public	O
access	O
,	O
etc	O
.	O
)	O
</s>
<s>
Resumable	O
Uploads	O
-	O
Google	B-General_Concept
Cloud	I-General_Concept
Storage	I-General_Concept
provides	O
a	O
resumable	O
data	O
transfer	O
feature	O
that	O
allows	O
users	O
to	O
resume	O
upload	O
operations	O
after	O
a	O
communication	O
failure	O
has	O
interrupted	O
the	O
flow	O
of	O
data	O
.	O
</s>
