<s>
Stickers	B-Protocol
as	I-Protocol
a	I-Protocol
service	I-Protocol
(	O
SaaS	B-Architecture
)	O
is	O
a	O
category	O
of	O
cloud	O
computing	O
services	O
that	O
provides	O
digital	O
stickers	O
to	O
messaging	B-Application
apps	I-Application
and	O
photo	O
editing	O
software	O
.	O
</s>
<s>
In	O
this	O
model	O
,	O
the	O
stickers	O
are	O
sold	O
through	O
stores	O
integrated	O
in	O
messaging	B-Application
apps	I-Application
,	O
chat	O
and	O
photo	O
editing	O
software	O
.	O
</s>
<s>
SaaS	B-Architecture
offerings	O
may	O
include	O
handling	O
micro	O
payments	O
,	O
sticker	O
shop	O
integration	O
and	O
content	O
management	O
systems	O
with	O
developing	O
apps	O
,	O
and	O
is	O
similar	O
to	O
Software	B-Architecture
as	I-Architecture
a	I-Architecture
Service	I-Architecture
(	O
SaaS	B-Architecture
)	O
and	O
Platform	B-Application
as	I-Application
a	I-Application
Service	I-Application
(	O
PaaS	B-Application
)	O
.	O
</s>
<s>
Digital	O
stickers	O
,	O
commonly	O
sold	O
as	O
virtual	B-General_Concept
goods	I-General_Concept
,	O
tend	O
to	O
depict	O
either	O
original	O
or	O
well-known	O
characters	O
.	O
</s>
<s>
They	O
are	O
used	O
during	O
chat	O
sessions	O
between	O
users	O
and	O
act	O
as	O
large	O
sized	O
emoji	B-Application
to	O
express	O
emotions	O
or	O
as	O
decoration	O
in	O
photographs	O
.	O
</s>
<s>
It	O
is	O
used	O
as	O
an	O
alternative	O
to	O
emoji	B-Application
or	O
emoticons	O
as	O
they	O
are	O
a	O
more	O
expressive	O
form	O
of	O
communication	O
and	O
have	O
a	O
variety	O
of	O
designs	O
and	O
art	O
styles	O
.	O
</s>
