<s>
Active	B-General_Concept
Server	I-General_Concept
Pages	I-General_Concept
(	O
ASP	O
)	O
is	O
Microsoft	O
's	O
first	O
server-side	B-Language
scripting	I-Language
language	O
and	O
engine	O
for	O
dynamic	O
web	O
pages	O
.	O
</s>
<s>
It	O
was	O
first	O
released	O
in	O
December	O
1996	O
,	O
before	O
being	O
superseded	O
in	O
January	O
2002	O
by	O
ASP.NET	B-Application
.	O
</s>
<s>
Initially	O
released	O
as	O
an	O
add-on	O
to	O
Internet	B-Application
Information	I-Application
Services	I-Application
(	O
IIS	O
)	O
via	O
the	O
Windows	O
NT	O
4.0	O
Option	O
Pack	O
(	O
1996	O
)	O
,	O
it	O
is	O
included	O
as	O
a	O
component	O
of	O
Windows	B-Device
Server	I-Device
(	O
since	O
the	O
initial	O
release	O
of	O
Windows	O
2000	O
Server	O
)	O
.	O
</s>
<s>
ASP	O
2.0	O
provides	O
six	O
built-in	O
objects	O
:	O
Application	O
,	O
ASPError	O
,	O
Request	O
,	O
Response	O
,	O
Server	O
,	O
and	O
Session	B-Protocol
.	O
</s>
<s>
Session	B-Protocol
object	O
,	O
for	O
example	O
,	O
represents	O
a	O
session	B-Protocol
that	O
maintains	O
the	O
state	O
of	O
variables	O
from	O
page	O
to	O
page	O
.	O
</s>
<s>
The	O
Active	B-Application
Scripting	I-Application
engine	O
's	O
support	O
of	O
the	O
Component	B-Application
Object	I-Application
Model	I-Application
enables	O
ASP	O
websites	O
to	O
access	O
functionality	O
in	O
compiled	O
libraries	B-Library
such	O
as	O
dynamic-link	O
libraries	B-Library
.	O
</s>
<s>
ASP	O
was	O
supported	O
until	O
14	O
January	O
2020	O
on	O
Windows	B-Device
7	I-Device
.	O
</s>
<s>
The	O
use	O
of	O
ASP	O
pages	O
will	O
be	O
supported	O
on	O
Windows	B-Application
8	I-Application
for	O
a	O
minimum	O
of	O
10	O
years	O
from	O
the	O
Windows	B-Application
8	I-Application
release	I-Application
date	O
.	O
</s>
<s>
ASP	O
uses	O
scripting	B-Language
on	I-Language
the	I-Language
server	I-Language
to	O
generate	O
content	O
that	O
is	O
sent	O
to	O
the	O
client	O
's	O
web	O
browser	O
via	O
HTTP	O
response	O
.	O
</s>
<s>
These	O
scripts	O
were	O
written	O
using	O
VBScript	B-Application
,	O
JScript	B-Language
,	O
or	O
PerlScript	O
.	O
</s>
<s>
In	O
the	O
example	O
below	O
,	O
Response.Write	O
Now( )	O
is	O
in	O
an	O
HTML	B-Language
page	O
;	O
it	O
would	O
be	O
dynamically	O
replaced	O
by	O
the	O
current	O
time	O
of	O
the	O
server	O
.	O
</s>
<s>
Web	O
pages	O
with	O
the	O
.asp	B-Application
filename	O
extension	O
use	O
ASP	O
,	O
although	O
some	O
web	O
sites	O
disguise	O
their	O
choice	O
of	O
scripting	O
language	O
for	O
security	O
purposes	O
by	O
using	O
the	O
more	O
common	O
.htm	B-Language
or	O
.html	B-Language
extensions	O
.	O
</s>
<s>
Pages	O
with	O
the	O
.aspx	B-Application
extension	O
use	O
compiled	O
ASP.NET	B-Application
;	O
however	O
,	O
ASP.NET	B-Application
pages	O
may	O
still	O
include	O
some	O
ASP	O
scripting	O
.	O
</s>
<s>
The	O
introduction	O
of	O
ASP.NET	B-Application
led	O
to	O
use	O
of	O
the	O
term	O
Classic	B-General_Concept
ASP	I-General_Concept
for	O
the	O
original	O
technology	O
.	O
</s>
<s>
The	O
session	B-Protocol
object	O
is	O
file	O
based	O
and	O
multiple	O
concurrent	O
read	O
and/or	O
write	O
requests	O
will	O
be	O
blocked	O
and	O
processed	O
in	O
turn	O
.	O
</s>
