<s>
Shopping	B-Application
cart	I-Application
software	I-Application
is	O
a	O
piece	O
of	O
e-commerce	O
software	O
on	O
a	O
web	B-Application
server	I-Application
that	O
allows	O
visitors	O
to	O
have	O
an	O
Internet	O
site	O
to	O
select	O
items	O
for	O
eventual	O
purchase	O
.	O
</s>
<s>
This	O
was	O
a	O
result	O
of	O
the	O
launch	O
of	O
the	O
browser	B-Application
Mosaic	B-Application
in	O
1993	O
and	O
Netscape	B-Protocol
in	O
1994	O
.	O
</s>
<s>
Some	O
setup	O
must	O
be	O
done	O
in	O
the	O
HTML	B-Language
code	I-Language
of	O
the	O
website	O
,	O
and	O
the	O
shopping	B-Application
cart	I-Application
software	I-Application
must	O
be	O
installed	O
on	O
the	O
server	B-Application
which	O
hosts	O
the	O
site	O
,	O
or	O
on	O
the	O
secure	B-Protocol
server	I-Protocol
which	O
accepts	O
sensitive	O
ordering	O
information	O
.	O
</s>
<s>
E-shopping	B-Application
carts	I-Application
are	O
usually	O
implemented	O
using	O
HTTP	B-Application
cookies	I-Application
or	O
query	B-Protocol
strings	I-Protocol
.	O
</s>
<s>
In	O
most	O
server	B-Application
based	O
implementations	O
however	O
,	O
data	O
related	O
to	O
the	O
shopping	O
cart	O
is	O
kept	O
in	O
the	O
session	O
object	O
and	O
is	O
accessed	O
and	O
manipulated	O
on	O
the	O
fly	O
,	O
as	O
the	O
user	O
selects	O
different	O
items	O
from	O
the	O
cart	O
.	O
</s>
<s>
Although	O
the	O
most	O
simple	O
shopping	O
carts	O
strictly	O
allow	O
for	O
an	O
item	O
to	O
be	O
added	O
to	O
a	O
basket	O
to	O
start	O
a	O
checkout	O
process	O
(	O
e.g.	O
,	O
the	O
free	O
PayPal	O
shopping	O
cart	O
)	O
,	O
most	O
shopping	B-Application
cart	I-Application
software	I-Application
provides	O
additional	O
features	O
that	O
an	O
Internet	O
merchant	O
uses	O
to	O
fully	O
manage	O
an	O
online	O
store	O
.	O
</s>
<s>
Shopping	B-Application
Cart	I-Application
Software	I-Application
is	O
also	O
known	O
as	O
e-commerce	O
software	O
,	O
e-store	O
software	O
,	O
online	O
store	O
software	O
or	O
storefront	O
software	O
and	O
online	O
shop	O
.	O
</s>
<s>
The	O
look	O
of	O
the	O
storefront	O
can	O
normally	O
be	O
changed	O
by	O
the	O
store	O
owner	O
so	O
that	O
it	O
merges	O
with	O
the	O
rest	O
of	O
the	O
web	O
site	O
(	O
i.e.	O
,	O
with	O
the	O
pages	O
not	O
controlled	O
by	O
the	O
shopping	B-Application
cart	I-Application
software	I-Application
in	O
use	O
on	O
the	O
store	O
)	O
.	O
</s>
<s>
The	O
amount	O
of	O
store	O
management	O
features	O
changes	O
depending	O
on	O
the	O
sophistication	O
of	O
the	O
shopping	B-Application
cart	I-Application
software	I-Application
chosen	O
by	O
the	O
merchant	O
,	O
but	O
in	O
general	O
a	O
store	O
manager	O
is	O
able	O
to	O
add	O
and	O
edit	O
products	O
,	O
categories	O
,	O
discounts	O
,	O
shipping	O
and	O
payment	O
settings	O
,	O
etc	O
.	O
</s>
<s>
API	O
:	O
most	O
of	O
the	O
major	O
shopping	B-Application
cart	I-Application
software	I-Application
solutions	O
offer	O
an	O
API	O
which	O
allows	O
third	O
party	O
solution	O
providers	O
to	O
build	O
integrations	O
to	O
the	O
shopping	B-Application
cart	I-Application
software	I-Application
.	O
</s>
<s>
For	O
example	O
,	O
an	O
accountancy	O
platform	O
like	O
Xero	O
or	O
Quickbooks	O
will	O
build	O
an	O
integration	O
with	O
the	O
shopping	B-Application
cart	I-Application
software	I-Application
so	O
that	O
orders	O
placed	O
on	O
the	O
shopping	O
cart	O
are	O
automatically	O
exported	O
as	O
invoices	O
.	O
</s>
<s>
Shopping	B-Application
cart	I-Application
software	I-Application
can	O
be	O
generally	O
categorized	O
into	O
three	O
types	B-Application
of	I-Application
E-commerce	I-Application
software	O
:	O
</s>
<s>
Licensed	O
software	O
:	O
The	O
software	O
is	O
downloaded	O
and	O
then	O
installed	O
on	O
a	O
Webserver	B-Application
.	O
</s>
<s>
This	O
is	O
most	O
often	O
associated	O
with	O
a	O
one-time	O
fee	O
,	O
the	O
main	O
advantages	O
of	O
this	O
option	O
are	O
that	O
the	O
merchant	O
owns	O
a	O
license	O
and	O
therefore	O
can	O
host	O
it	O
on	O
any	O
web	B-Application
server	I-Application
that	O
meets	O
the	O
server	B-Application
requirements	O
.	O
</s>
<s>
Visa	O
Inc	O
.	O
can	O
hold	O
shopping	B-Application
cart	I-Application
software	I-Application
providers	O
responsible	O
for	O
liability	O
that	O
may	O
occur	O
as	O
a	O
result	O
of	O
non-compliance	O
to	O
Visa	O
's	O
regulations	O
.	O
</s>
<s>
For	O
this	O
reason	O
,	O
Visa	O
Inc	O
.	O
may	O
require	O
that	O
online	O
merchants	O
use	O
shopping	B-Application
cart	I-Application
software	I-Application
providers	O
from	O
their	O
list	O
of	O
PCI	O
DSS-validated	O
service	O
providers	O
.	O
</s>
