<s>
Yammer	B-Protocol
(	O
)	O
is	O
an	O
enterprise	O
social	O
networking	O
service	O
that	O
is	O
part	O
of	O
the	O
Microsoft	B-Operating_System
365	I-Operating_System
family	O
of	O
products	O
.	O
</s>
<s>
It	O
is	O
used	O
mainly	O
for	O
private	O
communication	B-Protocol
within	I-Protocol
organizations	I-Protocol
but	O
is	O
also	O
used	O
for	O
networks	O
spanning	O
various	O
organizations	O
.	O
</s>
<s>
Access	O
to	O
a	O
Yammer	B-Protocol
network	O
is	O
determined	O
by	O
a	O
user	O
's	O
Internet	O
domain	O
so	O
that	O
only	O
individuals	O
with	O
approved	O
email	O
addresses	O
may	O
join	O
their	O
respective	O
networks	O
.	O
</s>
<s>
Microsoft	O
later	O
acquired	O
Yammer	B-Protocol
in	O
2012	O
,	O
for	O
US	O
$1.2	O
billion	O
.	O
</s>
<s>
Currently	O
Yammer	B-Protocol
is	O
included	O
in	O
all	O
enterprise	O
plans	O
of	O
Microsoft	B-Operating_System
365	I-Operating_System
.	O
</s>
<s>
In	O
2008	O
,	O
Yammer	B-Protocol
was	O
built	O
as	O
an	O
internal	O
feature	O
for	O
Geni	O
by	O
David	O
O	O
.	O
Sacks	O
.	O
</s>
<s>
After	O
6	O
months	O
of	O
use	O
at	O
Geni	O
,	O
Sacks	O
brought	O
Yammer	B-Protocol
to	O
TechCrunch50	O
to	O
showcase	O
its	O
abilities	O
and	O
launch	O
the	O
product	O
as	O
an	O
independent	O
service	O
away	O
from	O
Geni	O
.	O
</s>
<s>
Yammer	B-Protocol
won	O
top	O
prize	O
at	O
TechCrunch50	O
,	O
which	O
allowed	O
them	O
to	O
seed	O
more	O
money	O
into	O
the	O
project	O
.	O
</s>
<s>
It	O
was	O
determined	O
early	O
on	O
that	O
a	O
corporate	O
email	O
address	O
would	O
be	O
required	O
to	O
use	O
Yammer	B-Protocol
.	O
</s>
<s>
In	O
2009	O
,	O
Yammer	B-Protocol
went	O
through	O
its	O
first	O
redesign	O
.	O
</s>
<s>
The	O
main	O
feature	O
set	O
included	O
profiles	O
,	O
profile	O
photos	O
for	O
groups	O
,	O
following	O
suggestions	O
,	O
and	O
a	O
product	O
called	O
'	O
YammerFox	O
 '	O
,	O
which	O
was	O
an	O
extension	O
for	O
Firefox	B-Application
that	O
popped	O
up	O
an	O
alert	O
to	O
the	O
end	O
user	O
when	O
a	O
message	O
was	O
received	O
.	O
</s>
<s>
Yammer	B-Protocol
also	O
launched	O
their	O
own	O
app	O
store	O
which	O
included	O
Crocodoc	O
and	O
Zendesk	O
.	O
</s>
<s>
By	O
this	O
time	O
,	O
Yammer	B-Protocol
had	O
grown	O
to	O
over	O
1	O
million	O
total	O
users	O
on	O
the	O
platform	O
.	O
</s>
<s>
Yammer	B-Protocol
also	O
released	O
their	O
SharePoint	B-Protocol
2007	I-Protocol
Integration	O
,	O
and	O
moved	O
to	O
Scala	O
for	O
their	O
real-time	O
work	O
.	O
</s>
<s>
In	O
2011	O
,	O
Yammer	B-Protocol
made	O
the	O
move	O
from	O
Scala	O
back	O
to	O
Java	O
for	O
their	O
real-time	O
work	O
due	O
to	O
the	O
complexity	O
of	O
rolling	O
out	O
Scala	O
.	O
</s>
<s>
Yammer	B-Protocol
Notifications	O
was	O
released	O
as	O
a	O
replacement	O
to	O
YammerFox	O
.	O
</s>
<s>
During	O
this	O
period	O
,	O
Yammer	B-Protocol
grew	O
its	O
userbase	O
to	O
4	O
million	O
total	O
users	O
.	O
</s>
<s>
In	O
2012	O
,	O
Yammer	B-Protocol
purchased	O
OneDrum	O
.	O
</s>
<s>
This	O
acquisition	O
allowed	O
Yammer	B-Protocol
to	O
implement	O
real-time	O
document	O
editing	O
,	O
as	O
well	O
as	O
document	O
edit	O
history	O
.	O
</s>
<s>
Yammer	B-Protocol
was	O
then	O
purchased	O
by	O
Microsoft	O
for	O
US	O
$1.2	O
billion	O
.	O
</s>
<s>
Microsoft	O
announced	O
that	O
the	O
Yammer	B-Protocol
team	O
would	O
be	O
incorporated	O
into	O
the	O
Microsoft	B-Application
Office	I-Application
division	O
,	O
but	O
would	O
continue	O
to	O
report	O
to	O
Sacks	O
.	O
</s>
<s>
In	O
2013	O
,	O
Microsoft	O
integrated	O
Yammer	B-Protocol
into	O
Dynamics	B-Application
CRM	I-Application
and	O
pushed	O
the	O
Yammer	B-Protocol
subscription	O
into	O
their	O
Office	B-Operating_System
365	I-Operating_System
enterprise	O
plans	O
.	O
</s>
<s>
In	O
2014	O
,	O
Microsoft	O
announced	O
that	O
Yammer	B-Protocol
development	O
was	O
being	O
moved	O
into	O
the	O
Office	B-Operating_System
365	I-Operating_System
development	O
team	O
,	O
and	O
Sacks	O
announced	O
that	O
he	O
was	O
leaving	O
Microsoft	O
and	O
Yammer	B-Protocol
.	O
</s>
<s>
Yammer	B-Protocol
also	O
allowed	O
login	O
through	O
Office	B-Operating_System
365	I-Operating_System
,	O
as	O
well	O
as	O
plans	O
to	O
have	O
Yammer	B-Protocol
show	O
up	O
in	O
the	O
Office	B-Operating_System
365	I-Operating_System
header	O
for	O
selection	O
by	O
end	O
users	O
.	O
</s>
<s>
In	O
2015	O
,	O
Yammer	B-Protocol
removed	O
several	O
features	O
related	O
to	O
how	O
it	O
worked	O
with	O
SharePoint	B-Protocol
,	O
including	O
support	O
for	O
SharePoint	B-Protocol
Server	I-Protocol
2013	O
.	O
</s>
<s>
There	O
was	O
renewed	O
focus	O
on	O
the	O
Yammer	B-Protocol
Embed	O
Feed	O
.	O
</s>
<s>
In	O
2016	O
,	O
Yammer	B-Protocol
removed	O
the	O
Yammer	B-Protocol
Enterprise	O
Plan	O
,	O
due	O
to	O
a	O
shift	O
in	O
using	O
the	O
more	O
general	O
Office	B-Operating_System
365	I-Operating_System
subscription	O
structure	O
.	O
</s>
<s>
They	O
also	O
announced	O
that	O
Yammer	B-Protocol
would	O
integrate	O
with	O
Office	B-Operating_System
365	I-Operating_System
Groups	O
as	O
well	O
as	O
allow	O
end	O
users	O
the	O
ability	O
to	O
create	O
and	O
edit	O
Word	O
,	O
PowerPoint	O
,	O
and	O
Excel	O
documents	O
using	O
Office	O
Online	O
.	O
</s>
<s>
In	O
2019	O
,	O
Microsoft	O
announced	O
"	O
the	O
new	O
Yammer	B-Protocol
"	O
,	O
which	O
featured	O
a	O
redesign	O
based	O
on	O
Microsoft	O
's	O
Fluent	B-Application
Design	I-Application
System	I-Application
.	O
</s>
<s>
In	O
November	O
,	O
they	O
announced	O
full	O
integration	O
into	O
Microsoft	B-Application
Teams	I-Application
,	O
Microsoft	O
's	O
competitor	O
product	O
to	O
Slack	B-Protocol
.	O
</s>
<s>
In	O
February	O
2023	O
,	O
Microsoft	O
announced	O
that	O
Yammer	B-Protocol
would	O
be	O
fully	O
integrated	O
into	O
its	O
"	O
employee	O
experience	O
platform	O
"	O
Viva	O
and	O
its	O
own	O
social	O
networking	O
system	O
Viva	O
Engage	O
(	O
which	O
is	O
derived	O
from	O
Yammer	B-Protocol
)	O
,	O
with	O
Yammer	B-Protocol
to	O
be	O
phased	O
out	O
and	O
replaced	O
by	O
Viva	O
Engage	O
over	O
2023	O
.	O
</s>
