<s>
Persistent	B-Protocol
Chat	I-Protocol
is	O
a	O
messaging	O
concept	O
for	O
group	O
chat	O
software	O
that	O
consist	O
of	O
standing	O
,	O
topic-based	O
chatrooms	O
with	O
an	O
emphasis	O
on	O
real-time	O
messaging	O
,	O
that	O
preserve	O
conversation	O
history	O
over	O
time	O
which	O
is	O
visible	O
to	O
both	O
current	O
and	O
future	O
participants	O
.	O
</s>
<s>
The	O
Persistent	B-Protocol
Chat	I-Protocol
feature	O
was	O
first	O
introduced	O
in	O
Microsoft	B-Protocol
Lync	I-Protocol
2013	O
as	O
a	O
group	O
chat	O
offering	O
that	O
allows	O
teams	O
to	O
create	O
topic	O
focused	O
discussions	O
.	O
</s>
<s>
However	O
,	O
in	O
the	O
past	O
it	O
has	O
been	O
labelled	O
as	O
Group	O
Chat	O
,	O
MindAlign	B-Protocol
Group	O
Chat	O
by	O
Parlano	O
created	O
in	O
2000	O
which	O
was	O
later	O
acquired	O
by	O
Microsoft	O
in	O
2007	O
.	O
</s>
<s>
MindAlign	B-Protocol
provides	O
an	O
IRC	O
like	O
chatroom	O
experience	O
where	O
topical	O
chatrooms	O
can	O
be	O
looked	O
back	O
through	O
.	O
</s>
<s>
Since	O
then	O
the	O
Group	O
Chat	O
feature	O
has	O
surfaced	O
in	O
Microsoft	O
’s	O
Office	O
Communications	O
Server	O
2007	O
R2	O
which	O
later	O
became	O
Lync	O
2010	O
before	O
the	O
term	O
Persistent	B-Protocol
Chat	I-Protocol
was	O
finally	O
introduced	O
in	O
Microsoft	B-Protocol
Lync	I-Protocol
2013	O
(	O
now	O
known	O
as	O
Skype	B-Protocol
for	I-Protocol
Business	I-Protocol
)	O
.	O
</s>
<s>
According	O
to	O
Microsoft	O
,	O
persistent	B-Protocol
chat	I-Protocol
rooms	O
should	O
be	O
considered	O
for	O
the	O
following	O
use	O
cases	O
:	O
“	O
Coordinate	O
events	O
,	O
create	O
ask-the-expert	O
and	O
Q&A	O
forums	O
,	O
Brainstorm	O
,	O
create	O
a	O
bulletin-board	O
environment	O
for	O
evolving	O
topics	O
,	O
collect	O
feedback	O
from	O
colleagues	O
and	O
test	O
new	O
features	O
,	O
and	O
share	O
information	O
among	O
employees	O
across	O
different	O
working	O
hours	O
and	O
locations	O
”	O
.	O
</s>
<s>
Prior	O
to	O
the	O
introduction	O
of	O
the	O
Persistent	B-Protocol
Chat	I-Protocol
feature	O
in	O
Microsoft	O
’s	O
Unified	O
Communications	O
products	O
,	O
it	O
was	O
used	O
by	O
the	O
financial	O
services	O
sector	O
to	O
“	O
keep	O
client	O
banks	O
up-to-the-minute	O
on	O
changes	O
”	O
in	O
the	O
foreign	O
exchange	O
market	O
.	O
</s>
<s>
Most	O
chat	O
application	O
’s	O
conversation	O
history	O
persists	O
today	O
and	O
is	O
usually	O
not	O
referred	O
to	O
as	O
‘	O
Persistent	O
Chat’	O
but	O
rather	O
as	O
‘	O
Chat	O
History’	O
from	O
consumer	O
applications	O
,	O
like	O
WhatsApp	B-Application
,	O
to	O
enterprise	O
applications	O
,	O
like	O
Slack	B-Protocol
or	O
Microsoft	B-Application
Teams	I-Application
,	O
each	O
of	O
these	O
applications	O
features	O
chat	O
history	O
.	O
</s>
<s>
Although	O
the	O
use	O
of	O
the	O
term	O
‘	O
Persistent	O
Chat’	O
is	O
not	O
commonly	O
used	O
in	O
most	O
applications	O
,	O
Persistent	B-Protocol
Chat	I-Protocol
differs	O
from	O
applications	O
that	O
support	O
conversation	O
or	O
chat	O
history	O
regarding	O
the	O
original	O
use	O
case	O
the	O
technology	O
was	O
built	O
for	O
.	O
</s>
<s>
Along	O
with	O
conversation	O
history	O
that	O
persists	O
over	O
time	O
,	O
historically	O
MindAlign	B-Protocol
(	O
Persistent	B-Protocol
Chat	I-Protocol
)	O
was	O
,	O
and	O
is	O
still	O
used	O
as	O
an	O
always-on	O
communication	O
channel	O
"	O
for	O
conducting	O
ongoing	O
business-critical	O
conversations	O
"	O
that	O
are	O
often	O
transactional	O
in	O
nature	O
,	O
specifically	O
in	O
the	O
financial	O
services	O
sector	O
.	O
</s>
