<s>
DuraCloud	B-Application
is	O
an	O
open	O
source	O
digital	O
preservation	O
software	O
originally	O
developed	O
by	O
DuraSpace	O
and	O
maintained	O
by	O
LYRASIS	O
since	O
the	O
merger	O
in	O
2019	O
.	O
</s>
<s>
The	O
DuraCloud	B-Application
open	B-Application
source	I-Application
software	I-Application
is	O
available	O
under	O
the	O
terms	O
of	O
the	O
Apache	B-Application
License	I-Application
,	I-Application
Version	I-Application
2.0	I-Application
.	O
</s>
<s>
It	O
is	O
also	O
available	O
as	O
a	O
hosted	O
SAAS	B-Architecture
through	O
LYRASIS	O
and	O
Texas	O
Digital	O
Library	O
.	O
</s>
<s>
Users	O
can	O
efficiently	O
upload	O
content	O
via	O
the	O
SyncTool	O
,	O
REST	B-Protocol
API	I-Protocol
,	O
command	B-Application
line	I-Application
,	O
and	O
staff	O
interface	O
and	O
content	O
can	O
be	O
stored	O
in	O
Amazon	B-Application
Web	I-Application
Services	I-Application
S3	O
or	O
Glacier	O
services	O
and/or	O
Chronopolis	O
.	O
</s>
<s>
DuraCloud	B-Application
performs	O
regular	O
fixity	O
checks	O
on	O
provides	O
automatic	O
error	O
reporting	O
.	O
</s>
<s>
In	O
2009	O
,	O
The	O
Library	O
of	O
Congress	O
National	O
Digital	O
Information	O
Infrastructure	O
and	O
Preservation	O
Program	O
(	O
NDIIPP	O
)	O
and	O
DuraSpace	O
announced	O
a	O
joint	O
pilot	O
program	O
to	O
test	O
the	O
use	O
of	O
cloud	B-Architecture
technologies	I-Architecture
to	O
enable	O
perpetual	O
access	O
to	O
digital	O
content	O
with	O
DuraCloud	B-Application
.	O
</s>
<s>
Several	O
open	O
source	O
releases	O
of	O
the	O
DuraCloud	B-Application
software	O
led	O
to	O
the	O
public	O
launch	O
of	O
the	O
managed	O
service	O
on	O
November	O
7	O
,	O
2011	O
.	O
</s>
<s>
DuraCloud	B-Application
is	O
supported	O
by	O
the	O
DuraSpace	O
organization	O
.	O
</s>
<s>
DuraCloud	B-Application
2.0	O
was	O
released	O
on	O
April	O
17	O
,	O
2012	O
.	O
</s>
