<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
is	O
a	O
Yahoo	B-Application
!	I-Application
</s>
<s>
internet	B-Application
search	I-Application
provider	O
that	O
uses	O
Microsoft	O
's	O
Bing	B-Application
search	I-Application
engine	I-Application
to	O
power	O
results	O
,	O
since	O
2009	O
,	O
apart	O
from	O
four	O
years	O
with	O
Google	B-Application
until	O
2019	O
.	O
</s>
<s>
Originally	O
,	O
"	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
"	O
referred	O
to	O
a	O
Yahoo	B-Application
!	I-Application
-provided	O
interface	O
that	O
sent	O
queries	O
to	O
a	O
searchable	B-Application
index	O
of	O
pages	O
supplemented	O
with	O
its	O
directory	O
of	O
websites	O
.	O
</s>
<s>
The	O
results	O
were	O
presented	O
to	O
the	O
user	O
under	O
the	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Originally	O
,	O
none	O
of	O
the	O
actual	O
web	B-Application
crawling	I-Application
and	O
data	O
housing	O
was	O
done	O
by	O
Yahoo	B-Application
!	I-Application
</s>
<s>
In	O
2001	O
,	O
the	O
searchable	B-Application
index	O
was	O
powered	O
by	O
Inktomi	B-Application
and	O
later	O
by	O
Google	B-Application
until	O
2004	O
,	O
when	O
Yahoo	B-Application
!	I-Application
</s>
<s>
On	O
July	O
29	O
,	O
2009	O
,	O
Microsoft	O
and	O
Yahoo	B-Application
!	I-Application
</s>
<s>
announced	O
a	O
deal	O
in	O
which	O
Bing	B-Application
would	O
henceforth	O
power	O
Yahoo	B-Application
!	I-Application
</s>
<s>
During	O
the	O
same	O
period	O
of	O
time	O
,	O
Oath	O
(	O
the	O
then-owner	O
of	O
the	O
Yahoo	B-Application
brand	O
)	O
had	O
a	O
search	B-Application
market	I-Application
share	O
of	O
11.5	O
percent	O
.	O
</s>
<s>
Market	O
leader	O
Google	B-Application
generated	O
63.2	O
percent	O
of	O
all	O
core	O
search	O
queries	O
in	O
the	O
United	O
States	O
.	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
was	O
criticized	O
for	O
favoring	O
websites	O
owned	O
by	O
Yahoo	B-Application
!	I-Application
</s>
<s>
'	O
s	O
then-parent	O
company	O
,	O
Verizon	O
Media	O
,	O
in	O
its	O
search	B-Application
results	I-Application
.	O
</s>
<s>
In	O
September	O
2021	O
,	O
investment	O
funds	O
managed	O
by	O
the	O
private	O
equity	O
firm	O
Apollo	O
Global	O
Management	O
acquired	O
90%	O
of	O
Yahoo	B-Application
.	O
</s>
<s>
The	O
roots	O
of	O
Search	O
date	O
back	O
to	O
Yahoo	B-Application
!	I-Application
</s>
<s>
In	O
1995	O
,	O
they	O
introduced	O
a	O
search	B-Application
engine	I-Application
function	O
,	O
called	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
,	O
that	O
allowed	O
users	O
to	O
search	O
Yahoo	B-Application
!	I-Application
</s>
<s>
it	O
was	O
the	O
first	O
popular	O
search	B-Application
engine	I-Application
on	O
the	O
Web	O
,	O
despite	O
not	O
being	O
a	O
true	O
Web	B-Application
crawler	I-Application
search	B-Application
engine	I-Application
.	O
</s>
<s>
They	O
later	O
licensed	O
Web	B-Application
search	I-Application
engines	I-Application
from	O
other	O
companies	O
.	O
</s>
<s>
Seeking	O
to	O
provide	O
its	O
own	O
Web	B-Application
search	I-Application
engine	I-Application
results	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
acquired	O
their	O
own	O
Web	B-Application
search	I-Application
technology	O
.	O
</s>
<s>
In	O
2002	O
,	O
they	O
bought	O
Inktomi	B-Application
,	O
a	O
"	O
behind	O
the	O
scenes	O
"	O
or	O
OEM	O
search	B-Application
engine	I-Application
provider	O
,	O
whose	O
results	O
are	O
shown	O
on	O
other	O
companies	O
 '	O
websites	O
and	O
powered	O
Yahoo	B-Application
!	I-Application
</s>
<s>
In	O
2003	O
,	O
they	O
purchased	O
Overture	O
Services	O
,	O
Inc.	O
,	O
which	O
included	O
their	O
owned	O
the	O
AlltheWeb	B-Application
and	O
AltaVista	O
search	B-Application
engines	I-Application
.	O
</s>
<s>
Initially	O
,	O
even	O
though	O
Yahoo	B-Application
!	I-Application
</s>
<s>
owned	O
multiple	O
search	B-Application
engines	I-Application
,	O
they	O
did	O
n't	O
use	O
them	O
on	O
the	O
main	O
yahoo.com	O
website	O
,	O
but	O
kept	O
using	O
Google	B-Application
's	I-Application
search	I-Application
engine	I-Application
for	O
its	O
results	O
.	O
</s>
<s>
Starting	O
on	O
April	O
7	O
,	O
2003	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
became	O
its	O
own	O
web	O
crawler-based	O
search	B-Application
engine	I-Application
.	O
</s>
<s>
They	O
combined	O
the	O
capabilities	O
of	O
search	B-Application
engine	I-Application
companies	O
they	O
had	O
acquired	O
and	O
their	O
prior	O
research	O
into	O
a	O
reinvented	O
crawler	O
called	O
Yahoo	B-Application
!	I-Application
.	O
</s>
<s>
The	O
new	O
search	B-Application
engine	I-Application
results	O
were	O
included	O
in	O
all	O
of	O
Yahoo	B-Application
's	O
websites	O
that	O
had	O
a	O
web	B-Application
search	I-Application
function	O
.	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
also	O
started	O
to	O
sell	O
the	O
search	B-Application
engine	I-Application
results	O
to	O
other	O
companies	O
,	O
to	O
show	O
on	O
their	O
own	O
websites	O
.	O
</s>
<s>
Their	O
relationship	O
with	O
Google	B-Application
was	O
terminated	O
at	O
that	O
time	O
,	O
with	O
the	O
former	O
partners	O
becoming	O
each	O
other	O
's	O
main	O
competitors	O
.	O
</s>
<s>
In	O
October	O
2007	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
was	O
updated	O
with	O
a	O
more	O
modern	O
appearance	O
in	O
line	O
with	O
the	O
redesigned	O
Yahoo	B-Application
!	I-Application
</s>
<s>
In	O
July	O
2008	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
announced	O
the	O
introduction	O
of	O
a	O
new	O
service	O
called	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
BOSS	O
(	O
"	O
Build	O
your	O
Own	O
Search	B-Application
Engine	I-Application
"	O
)	O
.	O
</s>
<s>
This	O
service	O
opens	O
the	O
doors	O
for	O
developers	O
to	O
use	O
Yahoo	B-Application
!	I-Application
</s>
<s>
'	O
s	O
system	O
for	O
indexing	O
information	O
and	O
images	O
and	O
create	O
their	O
own	O
custom	O
search	B-Application
engine	I-Application
.	O
</s>
<s>
In	O
January	O
2010	O
,	O
Microsoft	O
announced	O
a	O
deal	O
in	O
which	O
it	O
would	O
take	O
over	O
the	O
functional	O
operation	O
of	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
,	O
and	O
set	O
up	O
a	O
joint	O
venture	O
to	O
sell	O
advertising	O
on	O
both	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
and	O
Bing	B-Application
known	O
as	O
the	O
Microsoft	B-Application
Search	I-Application
Alliance	O
.	O
</s>
<s>
A	O
complete	O
transition	O
of	O
all	O
Yahoo	B-Application
!	I-Application
</s>
<s>
sponsored	O
ad	O
clients	O
to	O
Microsoft	B-Application
adCenter	I-Application
(	O
now	O
Bing	B-Application
Ads	I-Application
)	O
occurred	O
in	O
October	O
2010	O
.	O
</s>
<s>
On	O
March	O
12	O
,	O
2014	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
announced	O
a	O
partnership	O
with	O
Yelp	B-Application
to	O
integrate	O
its	O
reviews	O
and	O
user-contributed	O
photos	O
into	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
(	O
as	O
Bing	B-Application
had	O
previously	O
done	O
)	O
.	O
</s>
<s>
In	O
November	O
2014	O
,	O
Mozilla	O
signed	O
a	O
five-year	O
partnership	O
with	O
Yahoo	B-Application
,	O
making	O
Yahoo	B-Application
Search	I-Application
the	O
default	O
search	B-Application
engine	I-Application
for	O
Firefox	B-Application
browsers	I-Application
in	O
the	O
US	O
.	O
</s>
<s>
In	O
April	O
2015	O
,	O
the	O
Microsoft	O
partnership	O
was	O
modified	O
,	O
now	O
only	O
requiring	O
Bing	B-Application
results	O
on	O
the	O
"	O
majority	O
"	O
of	O
desktop	O
traffic	O
,	O
opening	O
the	O
ability	O
for	O
Yahoo	B-Application
to	O
enter	O
into	O
non-exclusive	O
deals	O
for	O
search	B-Application
services	I-Application
on	O
mobile	O
platforms	O
and	O
the	O
remainder	O
of	O
desktop	O
traffic	O
.	O
</s>
<s>
In	O
October	O
2015	O
,	O
Yahoo	B-Application
subsequently	O
reached	O
an	O
agreement	O
with	O
Google	B-Application
to	O
provide	O
services	O
to	O
Yahoo	B-Application
Search	I-Application
through	O
the	O
end	O
of	O
2018	O
,	O
including	O
advertising	O
,	O
search	O
,	O
and	O
image	O
search	B-Application
services	I-Application
.	O
</s>
<s>
As	O
of	O
October	O
2019	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
is	O
once	O
again	O
powered	O
by	O
Bing	B-Application
.	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
Yahoo	B-Application
Search	I-Application
indexed	O
and	O
cached	O
the	O
common	O
HTML	O
page	O
formats	O
,	O
as	O
well	O
as	O
several	O
of	O
the	O
more	O
popular	O
file-types	O
,	O
such	O
as	O
PDF	B-Application
,	O
Excel	O
spreadsheets	O
,	O
PowerPoint	O
presentations	O
,	O
Word	O
documents	O
,	O
RSS/XML	O
and	O
plain	B-General_Concept
text	I-General_Concept
files	I-General_Concept
.	O
</s>
<s>
For	O
some	O
of	O
these	O
supported	O
file-types	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Search	O
provided	O
cached	O
links	O
on	O
their	O
search	B-Application
results	I-Application
allowing	O
for	O
viewing	O
of	O
these	O
file-types	O
in	O
standard	O
HTML	O
.	O
</s>
<s>
Using	O
the	O
Advanced	O
Search	O
interface	O
or	O
Preferences	O
settings	O
,	O
Yahoo	B-Application
Search	I-Application
allowed	O
the	O
customization	O
of	O
search	B-Application
results	I-Application
and	O
enabling	O
of	O
certain	O
settings	O
such	O
as	O
:	O
SafeSearch	O
,	O
Language	O
Selection	O
,	O
Number	O
of	O
results	O
,	O
Domain	O
restrictions	O
,	O
etc	O
.	O
</s>
<s>
For	O
a	O
Basic	O
and	O
starter	O
guide	O
to	O
Yahoo	B-Application
Search	I-Application
,	O
they	O
also	O
provided	O
a	O
Search	O
Basics	O
tutorial	O
.	O
</s>
<s>
In	O
2005	O
,	O
Yahoo	B-Application
began	O
to	O
provide	O
links	O
to	O
previous	O
versions	O
of	O
pages	O
archived	O
on	O
the	O
Wayback	O
Machine	O
.	O
</s>
<s>
In	O
the	O
first	O
week	O
of	O
May	O
2008	O
,	O
Yahoo	B-Application
launched	O
a	O
new	O
search	O
paradigm	O
called	O
Yahoo	B-Application
Glue	O
.	O
</s>
<s>
On	O
June	O
20	O
,	O
2007	O
,	O
Yahoo	B-Application
introduced	O
a	O
selection-based	B-Application
search	I-Application
feature	O
called	O
Yahoo	B-Application
Shortcuts	O
.	O
</s>
<s>
When	O
activated	O
this	O
selection-based	B-Application
search	I-Application
feature	O
enabled	O
users	O
to	O
invoke	O
search	O
using	O
only	O
their	O
mouse	O
and	O
receive	O
search	O
suggestions	O
in	O
floating	O
windows	O
while	O
remaining	O
on	O
Yahoo	B-Application
properties	O
such	O
as	O
Yahoo	B-Application
Mail	O
.	O
</s>
<s>
This	O
feature	O
was	O
only	O
active	O
on	O
Yahoo	B-Application
web	O
pages	O
or	O
pages	O
within	O
the	O
Yahoo	B-Application
Publisher	I-Application
Network	I-Application
.	O
</s>
<s>
Yahoo	B-Application
Shortcuts	O
required	O
the	O
content-owner	O
to	O
modify	O
the	O
underlying	O
HTML	O
of	O
his	O
or	O
her	O
webpage	O
to	O
call	O
out	O
the	O
specific	O
keywords	O
to	O
be	O
enhanced	O
.	O
</s>
<s>
The	O
technology	O
for	O
context-aware	O
selection-based	B-Application
search	I-Application
on	O
Yahoo	B-Application
pages	O
was	O
first	O
developed	O
by	O
Reiner	O
Kraft	O
.	O
</s>
<s>
On	O
May	O
11	O
,	O
2008	O
,	O
Yahoo	B-Application
introduced	O
SearchScan	O
.	O
</s>
<s>
If	O
enabled	O
this	O
add-on/feature	O
enhanced	O
Yahoo	B-Application
Search	I-Application
by	O
automatically	O
alerting	O
users	O
of	O
viruses	O
,	O
spyware	O
and	O
spam	O
websites	O
.	O
</s>
<s>
Yahoo	B-Application
Search	I-Application
provided	O
the	O
ability	O
to	O
search	O
across	O
numerous	O
vertical	O
properties	O
outside	O
just	O
the	O
Web	O
at	O
large	O
.	O
</s>
<s>
These	O
included	O
Images	O
,	O
Videos	O
,	O
Local	O
,	O
Shopping	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Answers	O
,	O
Audio	O
,	O
Directory	O
,	O
Jobs	O
,	O
News	O
,	O
Mobile	O
,	O
Travel	O
and	O
various	O
other	O
services	O
as	O
listed	O
on	O
their	O
About	O
Yahoo	B-Application
Search	I-Application
page	O
.	O
</s>
