<s>
Microsoft	B-Application
Azure	I-Application
SQL	I-Application
Database	I-Application
(	O
formerly	O
known	O
as	O
SQL	B-Application
Azure	I-Application
,	O
SQL	B-Application
Server	I-Application
Data	I-Application
Services	I-Application
,	O
SQL	B-Application
Services	I-Application
,	O
and	O
Windows	B-Application
Azure	I-Application
SQL	O
Database	O
)	O
is	O
a	O
managed	O
cloud	O
database	O
(	O
PaaS	B-Application
)	O
provided	O
as	O
part	O
of	O
Microsoft	B-Application
Azure	I-Application
services	O
.	O
</s>
<s>
A	O
cloud	O
database	O
is	O
a	O
database	O
that	O
runs	O
on	O
a	O
cloud	B-Architecture
computing	I-Architecture
platform	I-Architecture
,	O
and	O
access	O
to	O
it	O
is	O
provided	O
as	O
a	O
service	O
.	O
</s>
<s>
It	O
is	O
to	O
be	O
noted	O
that	O
Azure	O
SQL	O
Database	O
is	O
Microsoft	O
's	O
own	O
database	O
technology	O
and	O
differs	O
from	O
the	O
popular	O
alternative	O
of	O
AWS	O
RDS	O
,	O
which	O
is	O
an	O
add-on	O
container	B-General_Concept
service	I-General_Concept
available	O
for	O
multiple	O
database	O
solutions	O
running	O
on	O
AWS	O
cloud	O
.	O
</s>
<s>
Azure	O
SQL	O
Database	O
is	O
Microsoft	O
's	O
database	O
engine	O
that	O
is	O
built	O
for	O
the	O
cloud	O
and	O
runs	O
on	O
the	O
same	O
code	O
base	O
as	O
that	O
of	O
its	O
flagship	O
offering	O
,	O
SQL	B-Application
server	I-Application
.	O
</s>
<s>
Integration	O
with	O
open	O
source	O
tools	O
like	O
such	O
as	O
cheetah	O
(	O
Command-line	B-Application
interface	I-Application
utility	O
)	O
,	O
sql-cli	O
,	O
Visual	B-Language
Studio	I-Language
Code	I-Language
,	O
and	O
Microsoft	O
tools	O
like	O
Visual	B-Application
Studio	I-Application
,	O
SQL	B-Device
Server	I-Device
Management	I-Device
Studio	I-Device
,	O
Azure	B-Application
Management	I-Application
Portal	I-Application
,	O
PowerShell	B-Application
,	O
and	O
REST	B-Protocol
APIs	I-Protocol
.	O
</s>
<s>
Azure	O
SQL	O
Database	O
is	O
built	O
on	O
the	O
foundation	O
of	O
the	O
SQL	B-Application
server	I-Application
database	O
and	O
therefore	O
,	O
kept	O
in	O
sync	O
with	O
the	O
latest	O
version	O
of	O
it	O
by	O
using	O
the	O
common	O
code	O
base	O
.	O
</s>
<s>
Since	O
the	O
cloud	O
version	O
of	O
the	O
database	O
technology	O
strives	O
to	O
decouple	O
it	O
from	O
the	O
underlying	O
computing	O
infrastructure	O
,	O
it	O
does	O
n't	O
support	O
some	O
of	O
the	O
context	O
specific	O
T-SQL	O
features	O
available	O
in	O
the	O
traditional	O
SQL	B-Application
server	I-Application
.	O
</s>
<s>
However	O
,	O
rest	B-Protocol
of	O
the	O
features	O
are	O
the	O
same	O
with	O
incompatibilities	O
spelled	O
out	O
by	O
Microsoft	O
.	O
</s>
<s>
This	O
offering	O
can	O
be	O
further	O
customized	O
based	O
on	O
2	O
compute	O
tiers	O
(	O
provisioned	O
and	O
Serverless	B-General_Concept
)	O
and	O
3	O
service	O
tiers	O
(	O
General	O
Purpose	O
,	O
Business	O
Critical	O
,	O
and	O
Hyperscale	O
)	O
.	O
</s>
<s>
Service	O
tierTarget	O
workloadsStandardProposed	O
as	O
the	O
option	O
for	O
most	O
cloud	B-Architecture
applications	I-Architecture
,	O
supporting	O
multiple	O
concurrent	O
queries	O
.	O
</s>
