<s>
ASP.NET	B-Application
Core	I-Application
is	O
a	O
free	B-License
and	I-License
open-source	I-License
web	B-Application
framework	I-Application
and	O
successor	O
to	O
ASP.NET	B-Application
,	O
developed	O
by	O
Microsoft	O
.	O
</s>
<s>
It	O
is	O
a	O
modular	O
framework	O
that	O
runs	O
on	O
both	O
the	O
full	O
.NET	B-Application
Framework	I-Application
,	O
on	O
Windows	B-Application
,	O
and	O
the	O
cross-platform	B-Operating_System
.NET	B-Application
.	O
</s>
<s>
However	O
,	O
ASP.NET	B-Application
Core	I-Application
version	O
3	O
only	O
works	O
on	O
.NET	B-Application
Core	I-Application
,	O
dropping	O
support	O
of	O
the	O
.NET	B-Application
Framework	I-Application
.	O
</s>
<s>
The	O
framework	O
is	O
a	O
complete	O
rewrite	O
that	O
unites	O
the	O
previously	O
separate	O
ASP.NET	B-Language
MVC	I-Language
and	O
ASP.NET	B-Language
Web	I-Language
API	I-Language
into	O
a	O
single	O
programming	O
model	O
.	O
</s>
<s>
Despite	O
being	O
a	O
new	O
framework	O
,	O
built	O
on	O
a	O
new	O
web	O
stack	O
,	O
it	O
does	O
have	O
a	O
high	O
degree	O
of	O
concept	O
compatibility	O
with	O
ASP.NET	B-Application
.	O
</s>
<s>
The	O
ASP.NET	B-Application
Core	I-Application
framework	O
supports	O
side-by-side	O
versioning	O
so	O
that	O
different	O
applications	O
being	O
developed	O
on	O
a	O
single	O
machine	O
can	O
target	O
different	O
versions	O
of	O
ASP.NET	B-Application
Core	I-Application
.	O
</s>
<s>
This	O
is	O
not	O
possible	O
with	O
previous	O
versions	O
of	O
ASP.NET	B-Application
.	O
</s>
<s>
Blazor	B-Operating_System
is	O
a	O
recent	O
(	O
optional	O
)	O
component	O
to	O
support	O
WebAssembly	B-Language
and	O
since	O
version	O
5.0	O
,	O
it	O
has	O
dropped	O
support	O
for	O
some	O
old	O
web	O
browsers	O
.	O
</s>
<s>
While	O
current	O
Microsoft	B-Application
Edge	I-Application
works	O
,	O
the	O
legacy	B-Device
version	I-Device
of	O
it	O
,	O
i.e.	O
</s>
<s>
"	O
Microsoft	B-Application
Edge	I-Application
Legacy	I-Application
"	O
and	O
Internet	B-Application
Explorer	I-Application
11	I-Application
are	O
dropped	O
when	O
you	O
use	O
Blazor	B-Operating_System
.	O
</s>
<s>
Originally	O
deemed	O
ASP.NET	B-Application
vNext	I-Application
,	O
the	O
framework	O
was	O
going	O
to	O
be	O
called	O
ASP.NET	B-Application
5	O
when	O
ready	O
.	O
</s>
<s>
However	O
,	O
in	O
order	O
to	O
avoid	O
implying	O
it	O
is	O
an	O
update	O
to	O
the	O
existing	O
ASP.NET	B-Application
framework	I-Application
,	O
Microsoft	O
later	O
changed	O
the	O
name	O
to	O
ASP.NET	B-Application
Core	I-Application
at	O
the	O
1.0	O
release	O
.	O
</s>
