<s>
Twilio	B-General_Concept
is	O
an	O
American	O
company	O
based	O
in	O
San	O
Francisco	O
,	O
California	O
,	O
which	O
provides	O
programmable	O
communication	O
tools	O
for	O
making	O
and	O
receiving	O
phone	O
calls	O
,	O
sending	O
and	O
receiving	O
text	O
messages	O
,	O
and	O
performing	O
other	O
communication	O
functions	O
using	O
its	O
web	O
service	O
APIs	B-Application
.	O
</s>
<s>
Twilio	B-General_Concept
was	O
founded	O
in	O
2008	O
by	O
Jeff	O
Lawson	O
,	O
Evan	O
Cooke	O
,	O
and	O
John	O
Wolthuis	O
and	O
was	O
based	O
initially	O
in	O
Seattle	O
,	O
Washington	O
,	O
and	O
San	O
Francisco	O
,	O
California	O
.	O
</s>
<s>
On	O
November	O
20	O
,	O
2008	O
,	O
the	O
company	O
launched	O
Twilio	B-General_Concept
Voice	B-Application
,	O
an	O
API	B-Application
to	O
make	O
and	O
receive	O
phone	O
calls	O
completely	O
hosted	O
in	O
the	O
cloud	O
.	O
</s>
<s>
Twilio	B-General_Concept
's	O
text	O
messaging	O
API	B-Application
was	O
released	O
in	O
February	O
2010	O
,	O
and	O
SMS	B-Device
shortcodes	O
were	O
released	O
in	O
public	O
beta	O
in	O
July	O
2011	O
.	O
</s>
<s>
Twilio	B-General_Concept
raised	O
approximately	O
$103	O
million	O
in	O
venture	O
capital	O
growth	O
funding	O
.	O
</s>
<s>
Twilio	B-General_Concept
received	O
its	O
first	O
round	O
of	O
seed	O
funding	O
in	O
March	O
2009	O
for	O
an	O
undisclosed	O
amount	O
from	O
Mitch	O
Kapor	O
,	O
The	O
Founders	O
Fund	O
,	O
Dave	O
McClure	O
,	O
David	O
G	O
.	O
Cohen	O
,	O
Chris	O
Sacca	O
,	O
Manu	O
Kumar	O
,	O
from	O
K9	O
Ventures	O
,	O
and	O
Jeff	O
Fluhr	O
.	O
</s>
<s>
Twilio	B-General_Concept
's	O
first	O
A	O
round	O
of	O
funding	O
was	O
led	O
by	O
Union	O
Square	O
Ventures	O
for	O
$3.7	O
million	O
and	O
its	O
second	O
B	O
round	O
of	O
funding	O
,	O
for	O
$12	O
million	O
,	O
was	O
led	O
by	O
Bessemer	O
Venture	O
Partners	O
.	O
</s>
<s>
Twilio	B-General_Concept
received	O
$17	O
million	O
in	O
a	O
Series	O
C	O
round	O
in	O
December	O
2011	O
from	O
Bessemer	O
Venture	O
Partners	O
and	O
Union	O
Square	O
Ventures	O
.	O
</s>
<s>
In	O
July	O
2013	O
Twilio	B-General_Concept
received	O
another	O
$70	O
million	O
from	O
Redpoint	O
Ventures	O
,	O
Draper	O
Fisher	O
Jurvetson	O
(	O
DFJ	O
)	O
,	O
and	O
Bessemer	O
Venture	O
Partners	O
.	O
</s>
<s>
In	O
July	O
2015	O
,	O
Twilio	B-General_Concept
raised	O
a	O
$130	O
million	O
Series	O
E	O
from	O
Fidelity	O
,	O
T	O
Rowe	O
Price	O
,	O
Altimeter	O
Capital	O
Management	O
,	O
and	O
Arrowpoint	O
Partners	O
,	O
in	O
addition	O
to	O
Amazon	B-Application
and	O
Salesforce	B-Application
.	O
</s>
<s>
Twilio	B-General_Concept
filed	O
for	O
IPO	O
(	O
)	O
and	O
started	O
trading	O
on	O
June	O
23	O
,	O
2016	O
,	O
with	O
a	O
92%	O
increase	O
on	O
the	O
first	O
day	O
.	O
</s>
<s>
In	O
March	O
2020	O
,	O
Twilio	B-General_Concept
announced	O
the	O
appointment	O
of	O
Steve	O
Pugh	O
as	O
Chief	O
Security	O
Officer	O
and	O
Glenn	O
Weinstein	O
as	O
Chief	O
Customer	O
Officer	O
.	O
</s>
<s>
On	O
August	O
4	O
,	O
2022	O
,	O
an	O
unknown	O
attacker	O
accessed	O
Twilio	B-General_Concept
's	O
internal	O
network	O
through	O
an	O
SMS	B-Device
phishing	O
campaign	O
targeting	O
Twilio	B-General_Concept
's	O
employees	O
.	O
</s>
<s>
Twilio	B-General_Concept
confirmed	O
the	O
breach	O
three	O
days	O
later	O
,	O
clarifying	O
that	O
it	O
affected	O
only	O
"	O
a	O
limited	O
number	O
"	O
of	O
customer	O
accounts	O
.	O
</s>
<s>
On	O
August	O
15	O
,	O
Signal	B-Application
announced	O
that	O
it	O
had	O
been	O
affected	O
by	O
the	O
breach	O
,	O
indicating	O
that	O
the	O
125	O
customers	O
affected	O
included	O
at	O
least	O
some	O
enterprise	O
accounts	O
.	O
</s>
<s>
In	O
September	O
2022	O
,	O
Twilio	B-General_Concept
laid	O
off	O
11%	O
of	O
its	O
workforce	O
to	O
become	O
profitable	O
.	O
</s>
<s>
As	O
part	O
of	O
the	O
restructuring	O
,	O
the	O
company	O
also	O
announced	O
creation	O
of	O
two	O
business	O
unitsTwilio	O
Data	O
&	O
Applications	O
and	O
Twilio	B-General_Concept
Communications	O
.	O
</s>
<s>
Twilio	B-General_Concept
is	O
known	O
for	O
using	O
platform	O
evangelism	O
to	O
acquire	O
customers	O
.	O
</s>
<s>
An	O
early	O
example	O
is	O
GroupMe	B-Protocol
,	O
which	O
was	O
founded	O
in	O
May	O
2010	O
at	O
the	O
TechCrunch	O
Disrupt	O
hackathon	O
and	O
uses	O
Twilio	B-General_Concept
's	O
text	O
messaging	O
product	O
to	O
facilitate	O
group	O
chat	O
.	O
</s>
<s>
GroupMe	B-Protocol
raised	O
$10.6	O
million	O
in	O
venture	O
funding	O
in	O
January	O
2011	O
.	O
</s>
<s>
Following	O
the	O
success	O
of	O
TechCrunch	O
Disrupt	O
,	O
seed	O
accelerator	O
500	O
Startups	O
(	O
now	O
500	O
Global	O
)	O
announced	O
the	O
Twilio	B-General_Concept
Fund	O
,	O
a	O
$	O
250,000	O
"	O
micro-fund	O
"	O
to	O
provide	O
seed	O
money	O
to	O
startups	O
using	O
Twilio	B-General_Concept
in	O
September	O
2010	O
.	O
</s>
<s>
In	O
February	O
2015	O
,	O
Twilio	B-General_Concept
acquired	O
Authy	O
,	O
a	O
Y	O
Combinator-backed	O
startup	O
that	O
offers	O
two-factor	O
authentication	O
services	O
to	O
end	O
users	O
,	O
developers	O
and	O
enterprises	O
.	O
</s>
<s>
In	O
September	O
2016	O
,	O
Twilio	B-General_Concept
acquired	O
Tikal	O
Technologies	O
,	O
the	O
development	O
team	O
behind	O
the	O
Kurento	O
WebRTC	B-Protocol
open-source	B-Application
project	O
,	O
for	O
$8.5	O
million	O
.	O
</s>
<s>
In	O
February	O
2017	O
,	O
Twilio	B-General_Concept
acquired	O
Beepsend	O
,	O
a	O
Swedish-based	O
SMS	B-Device
messaging	O
provider	O
,	O
for	O
an	O
undisclosed	O
amount	O
.	O
</s>
<s>
Twilio	B-General_Concept
announced	O
in	O
September	O
2018	O
that	O
they	O
were	O
acquiring	O
Ytica	O
,	O
a	O
Prague	O
,	O
Czech	O
Republic-based	O
speech	O
analytics	O
firm	O
,	O
for	O
an	O
undisclosed	O
amount	O
.	O
</s>
<s>
In	O
October	O
2018	O
,	O
Twilio	B-General_Concept
announced	O
they	O
were	O
acquiring	O
SendGrid	B-Application
,	O
a	O
Denver	O
,	O
Colorado-based	O
customer	O
communication	O
platform	O
for	O
transactional	O
and	O
marketing	O
email	O
,	O
for	O
$2	O
billion	O
.	O
</s>
<s>
In	O
November	O
2018	O
,	O
Twilio	B-General_Concept
acquired	O
Core	O
Network	O
Dynamics	O
GmbH	O
,	O
a	O
Berlin	O
,	O
Germany-based	O
virtual	O
evolved	O
packet	O
core	O
company	O
.	O
</s>
<s>
Twilio	B-General_Concept
announced	O
in	O
July	O
2020	O
that	O
they	O
had	O
acquired	O
Electric	O
Imp	O
,	O
an	O
internet	O
of	O
things	O
platform	O
company	O
,	O
for	O
an	O
undisclosed	O
amount	O
.	O
</s>
<s>
In	O
October	O
of	O
that	O
year	O
,	O
Twilio	B-General_Concept
acquired	O
Segment	O
,	O
a	O
platform	O
to	O
collect	O
,	O
clean	O
,	O
and	O
activate	O
customer	O
data	O
,	O
for	O
$3.2	O
billion	O
.	O
</s>
<s>
In	O
May	O
2021	O
,	O
Twilio	B-General_Concept
announced	O
that	O
they	O
were	O
acquiring	O
Ionic	O
Security	O
,	O
a	O
data	O
security	O
platform	O
for	O
$30.2	O
million	O
,	O
and	O
Zipwhip	O
,	O
a	O
toll-free	O
messaging	O
services	O
provider	O
,	O
for	O
$850	O
million	O
.	O
</s>
<s>
In	O
January	O
2022	O
,	O
Twilio	B-General_Concept
announced	O
that	O
they	O
agreed	O
to	O
acquire	O
Boku	O
Identity	O
,	O
Inc	O
.	O
from	O
Boku	O
,	O
Inc	O
.	O
for	O
$32.3	O
million	O
.	O
</s>
<s>
Twilio	B-General_Concept
uses	O
Amazon	B-Application
Web	I-Application
Services	I-Application
to	O
host	O
its	O
communication	O
infrastructure	O
via	O
APIs	B-Application
.	O
</s>
<s>
Twilio	B-General_Concept
follows	O
architectural	O
design	O
principles	O
to	O
protect	O
against	O
unexpected	O
outages	O
and	O
received	O
praise	O
for	O
staying	O
online	O
during	O
the	O
widespread	O
Amazon	B-Application
Web	I-Application
Services	I-Application
outage	O
in	O
April	O
2011	O
.	O
</s>
<s>
Rather	O
than	O
using	O
industry-standard	O
protocols	O
such	O
as	O
SIP	B-Application
for	O
call	O
control	O
,	O
Twilio	B-General_Concept
uses	O
a	O
customized	O
markup	O
language	O
known	O
as	O
TwiML	O
to	O
allow	O
for	O
direct	O
integration	O
with	O
its	O
services	O
.	O
</s>
<s>
Twilio	B-General_Concept
and	O
the	O
customer	O
typically	O
exchange	O
TwiML	O
documents	O
via	O
HTTP	O
Webhook	B-Protocol
.	O
</s>
<s>
Twilio	B-General_Concept
supports	O
the	O
development	O
of	O
open-source	B-Application
software	I-Application
.	O
</s>
<s>
In	O
June	O
2010	O
,	O
Twilio	B-General_Concept
launched	O
OpenVBX	O
,	O
an	O
open-source	B-Application
product	O
that	O
lets	O
business	O
users	O
configure	O
phone	O
numbers	O
to	O
receive	O
and	O
route	O
phone	O
calls	O
.	O
</s>
<s>
One	O
month	O
later	O
,	O
Twilio	B-General_Concept
engineer	O
Kyle	O
Conroy	O
released	O
Stashboard	O
,	O
an	O
open-source	B-Application
status	O
dashboard	O
written	O
in	O
the	O
Python	B-Language
programming	I-Language
language	I-Language
that	O
any	O
API	B-Application
or	O
software	O
service	O
can	O
use	O
to	O
display	O
whether	O
their	O
service	O
is	O
functioning	O
properly	O
.	O
</s>
<s>
Twilio	B-General_Concept
also	O
sponsors	O
Localtunnel	O
,	O
created	O
by	O
former	O
engineer	O
Jeff	O
Lindsay	O
,	O
which	O
enables	O
software	O
developers	O
to	O
expose	O
their	O
local	O
development	O
environment	O
to	O
the	O
public	O
Internet	O
from	O
behind	O
a	O
NAT	B-Protocol
.	O
</s>
<s>
Twilio	B-General_Concept
lists	O
several	O
other	O
open-source	B-Application
projects	O
on	O
their	O
website	O
,	O
such	O
as	O
:	O
</s>
<s>
Flask	B-Language
Restful	O
:	O
Python	B-Language
Flask	I-Language
(	O
web	O
framework	O
)	O
to	O
build	O
REST	O
APIs	B-Application
.	O
</s>
