<s>
AppScale	B-Application
is	O
a	O
software	O
company	O
offering	O
cloud	O
infrastructure	O
software	O
and	O
services	O
to	O
enterprises	O
,	O
government	O
agencies	O
,	O
contractors	O
,	O
and	O
third-party	O
service	O
providers	O
.	O
</s>
<s>
The	O
company	O
commercially	O
supports	O
one	O
software	O
product	O
,	O
AppScale	B-Application
ATS	O
,	O
a	O
managed	O
hybrid	O
cloud	O
infrastructure	O
software	O
platform	O
that	O
emulates	O
the	O
core	O
AWS	B-Application
APIs	B-Application
.	O
</s>
<s>
In	O
2019	O
,	O
the	O
company	O
ended	O
commercial	O
support	O
for	O
its	O
open-source	B-Application
serverless	B-General_Concept
computing	I-General_Concept
platform	O
AppScale	B-Application
GTS	O
,	O
however	O
,	O
its	O
source	O
code	O
remains	O
freely	O
available	O
to	O
the	O
open-source	B-Application
community	O
.	O
</s>
<s>
AppScale	B-Application
began	O
as	O
a	O
research	O
project	O
at	O
the	O
University	O
of	O
California	O
,	O
Santa	O
Barbara	O
Computer	O
Science	O
Department	O
under	O
the	O
supervision	O
of	O
Professor	O
Chandra	O
Krintz	O
.	O
</s>
<s>
The	O
project	O
was	O
originally	O
funded	O
by	O
the	O
NSF	O
,	O
with	O
additional	O
funding	O
from	O
Google	B-Application
,	O
IBM	O
and	O
NIH	O
.	O
</s>
<s>
In	O
2012	O
,	O
co-founders	O
Dr.	O
Chandra	O
Krintz	O
,	O
Chief	O
Scientist	O
,	O
Dr.	O
Navraj	O
Chohan	O
,	O
Development	O
Lead	O
,	O
and	O
Woody	O
Rollins	O
,	O
CEO	O
founded	O
AppScale	B-Application
Systems	O
to	O
commercialize	O
the	O
private	O
PaaS	B-Application
AppScale	B-Application
technology	O
.	O
</s>
<s>
Rollins	O
,	O
a	O
pioneer	O
in	O
private	O
cloud	O
infrastructure	O
,	O
was	O
a	O
co-founder	O
and	O
former	O
CEO	O
of	O
Eucalyptus	B-General_Concept
Systems	I-General_Concept
.	O
</s>
<s>
In	O
2014	O
,	O
Graziano	O
Obertelli	O
joined	O
AppScale	B-Application
as	O
VP	O
of	O
Operations	O
from	O
Eucalyptus	B-General_Concept
Systems	I-General_Concept
,	O
where	O
he	O
was	O
a	O
co-founder	O
.	O
</s>
<s>
In	O
2017	O
,	O
Dimitrii	O
Calzago	O
joined	O
AppScale	B-Application
as	O
CTO	O
from	O
Hewlett	O
Packard	O
Enterprise	O
,	O
where	O
he	O
was	O
Director	O
of	O
Cloud	O
R&D	O
.	O
</s>
<s>
In	O
April	O
2014	O
,	O
AppScale	B-Application
Systems	O
was	O
named	O
a	O
2014	O
Cool	O
Vendor	O
in	O
PaaS	B-Application
by	O
Gartner	O
,	O
Inc	O
.	O
</s>
<s>
In	O
September	O
2014	O
,	O
AppScale	B-Application
Systems	O
won	O
a	O
Bossie	O
Award	O
from	O
InfoWorld	O
for	O
best	O
open	B-License
source	I-License
data	O
center	O
and	O
cloud	O
software	O
.	O
</s>
<s>
AppScale	B-Application
partnered	O
with	O
Optimal	O
Dynamics	O
on	O
April	O
11	O
,	O
2016	O
.	O
</s>
<s>
AppScale	B-Application
was	O
part	O
of	O
the	O
AliLaunch	O
Program	O
,	O
August	O
9	O
,	O
2016	O
.	O
</s>
<s>
Chandra	O
Kritz	O
,	O
Chief	O
Science	O
Officer	O
of	O
AppScale	B-Application
,	O
was	O
featured	O
on	O
Dev	O
Radio	O
in	O
the	O
episode	O
titled	O
"	O
How	O
to	O
Rescue	O
your	O
apps	O
with	O
the	O
help	O
of	O
AppScale	B-Application
"	O
on	O
December	O
16	O
,	O
2016	O
.	O
</s>
<s>
In	O
late	O
2017	O
,	O
AppScale	B-Application
Systems	O
started	O
offering	O
commercial	O
support	O
for	O
Eucalyptus	B-General_Concept
private	O
cloud	O
software	O
after	O
DXC	O
Technology	O
chose	O
to	O
stop	O
the	O
development	O
and	O
support	O
of	O
Eucalyptus	B-General_Concept
.	O
</s>
<s>
This	O
prompted	O
AppScale	B-Application
,	O
led	O
by	O
members	O
of	O
the	O
Eucalyptus	B-General_Concept
founding	O
team	O
,	O
to	O
fork	O
the	O
code	O
and	O
continue	O
developing	O
the	O
software	O
,	O
which	O
was	O
renamed	O
AppScale	B-Application
ATS	O
.	O
</s>
<s>
AppScale	B-Application
ATS	O
(	O
formerly	O
Eucalyptus	B-General_Concept
)	O
is	O
a	O
managed	O
hybrid	O
cloud	O
infrastructure	O
software	O
that	O
emulates	O
the	O
core	O
AWS	B-Application
APIs	B-Application
.	O
</s>
<s>
AppScale	B-Application
ATS	O
implements	O
AWS-compatible	O
cloud	B-Architecture
services	I-Architecture
over	O
dedicated	O
infrastructure	O
,	O
providing	O
a	O
dedicated	O
private	O
AWS	B-Application
region	O
.	O
</s>
<s>
ATS	O
enables	O
the	O
creation	O
of	O
cost-effective	O
and	O
flexible	O
AWS	B-Application
hybrid	O
cloud	O
environments	O
with	O
a	O
seamless	O
experience	O
for	O
developers	O
and	O
workloads	O
across	O
public	O
and	O
private	O
resources	O
.	O
</s>
<s>
AppScale	B-Application
GTS	O
is	O
an	O
open-source	B-Application
serverless	B-General_Concept
computing	I-General_Concept
platform	O
that	O
automatically	O
deploys	O
and	O
scales	O
unmodified	O
Google	B-Application
App	I-Application
Engine	I-Application
applications	O
over	O
public	O
and	O
private	O
clouds	O
,	O
as	O
well	O
as	O
on-premises	O
clusters	O
.	O
</s>
<s>
AppScale	B-Application
is	O
modeled	O
on	O
the	O
App	B-Application
Engine	I-Application
APIs	B-Application
and	O
has	O
support	O
for	O
Go	B-Application
,	O
Java	B-Language
,	O
PHP	B-Application
,	O
and	O
Python	B-Language
applications	O
.	O
</s>
<s>
The	O
goal	O
of	O
AppScale	B-Application
is	O
to	O
provide	O
developers	O
with	O
a	O
rapid	O
,	O
API-driven	O
development	O
platform	O
that	O
can	O
run	O
applications	O
on	O
any	O
cloud	O
infrastructure	O
.	O
</s>
<s>
AppScale	B-Application
decouples	O
app	O
logic	O
from	O
its	O
service	O
ecosystem	O
to	O
give	O
developers	O
and	O
cloud	O
administrators	O
control	O
over	O
app	O
deployment	O
,	O
data	O
storage	O
,	O
resource	O
use	O
,	O
backup	O
and	O
migration	O
.	O
</s>
<s>
AppScale	B-Application
decouples	O
app	O
logic	O
from	O
its	O
service	O
ecosystem	O
to	O
give	O
developers	O
and	O
cloud	O
administrators	O
control	O
over	O
app	O
deployment	O
,	O
data	O
storage	O
,	O
resource	O
use	O
,	O
backup	O
,	O
and	O
migration	O
.	O
</s>
<s>
AppScale	B-Application
includes	O
high-level	O
APIs	B-Application
for	O
persistence	O
,	O
asynchronous	O
execution	O
,	O
distributed	O
memory	O
cache	O
,	O
user	O
authentication	O
,	O
and	O
more	O
.	O
</s>
<s>
AppScale	B-Application
was	O
developed	O
and	O
maintained	O
by	O
AppScale	B-Application
Systems	O
,	O
Inc.	O
,	O
based	O
in	O
Santa	O
Barbara	O
,	O
California	O
,	O
and	O
Google	B-Application
.	I-Application
</s>
