<s>
Blazor	B-Operating_System
is	O
a	O
free	B-License
and	I-License
open-source	I-License
web	B-Application
framework	I-Application
that	O
enables	O
developers	O
to	O
create	O
web	B-Application
apps	I-Application
using	O
C#	B-Application
and	O
HTML	B-Language
.	O
</s>
<s>
Six	O
different	O
editions	O
of	O
Blazor	B-Operating_System
apps	O
have	O
been	O
announced	O
.	O
</s>
<s>
Blazor	B-Operating_System
Server	O
:	O
These	O
apps	O
are	O
hosted	O
on	O
an	O
ASP.NET	B-Application
Core	I-Application
server	O
in	O
ASP.NET	B-Application
Razor	I-Application
format	O
.	O
</s>
<s>
Remote	O
clients	O
act	O
as	O
thin	B-Device
clients	I-Device
,	O
meaning	O
that	O
the	O
bulk	O
of	O
the	O
processing	O
load	O
is	O
on	O
the	O
server	O
.	O
</s>
<s>
The	O
client	O
's	O
web	B-Application
browser	I-Application
downloads	O
a	O
small	O
page	O
and	O
updates	O
its	O
UI	O
over	O
a	O
SignalR	B-Language
connection	O
.	O
</s>
<s>
Blazor	B-Operating_System
Server	O
was	O
released	O
as	O
a	O
part	O
of	O
.NET	B-Application
Core	I-Application
3	I-Application
.	O
</s>
<s>
Blazor	B-Operating_System
WebAssembly	B-Language
:	O
Single-page	B-Application
apps	I-Application
that	O
are	O
downloaded	O
to	O
the	O
client	O
's	O
web	B-Application
browser	I-Application
before	O
running	O
.	O
</s>
<s>
The	O
size	O
of	O
the	O
download	O
is	O
larger	O
than	O
for	O
Blazor	B-Operating_System
Server	O
,	O
depends	O
on	O
the	O
app	O
,	O
and	O
the	O
processing	O
is	O
entirely	O
done	O
on	O
the	O
client	O
hardware	O
.	O
</s>
<s>
As	O
its	O
name	O
suggests	O
,	O
this	O
client-side	O
framework	O
is	O
written	O
in	O
WebAssembly	B-Language
,	O
as	O
opposed	O
to	O
JavaScript	B-Language
(	O
while	O
they	O
can	O
be	O
used	O
together	O
)	O
.	O
</s>
<s>
Blazor	B-Operating_System
PWA	B-Application
and	O
Blazor	B-Operating_System
Hybrid	O
editions	O
:	O
The	O
former	O
supports	O
progressive	B-Application
web	I-Application
apps	I-Application
(	O
PWA	B-Application
)	O
.	O
</s>
<s>
The	O
latter	O
is	O
a	O
platform-native	O
framework	O
(	O
as	O
opposed	O
to	O
a	O
web	B-Application
framework	I-Application
)	O
but	O
still	O
renders	O
the	O
user	O
interface	O
using	O
web	O
technologies	O
(	O
e.g.	O
</s>
<s>
HTML	B-Language
and	O
CSS	B-Language
)	O
.	O
</s>
<s>
Blazor	B-Operating_System
Native	O
:	O
A	O
platform-native	O
framework	O
that	O
renders	O
a	O
platform-native	O
user	O
interface	O
–	O
has	O
also	O
been	O
considered	O
but	O
has	O
not	O
reached	O
the	O
planning	O
stage	O
.	O
</s>
<s>
Blazor	B-Operating_System
United	O
:	O
These	O
apps	O
will	O
be	O
a	O
combination	O
of	O
both	O
Blazor	B-Operating_System
Server	O
and	O
Blazor	B-Operating_System
WebAssembly	B-Language
and	O
allow	O
a	O
"	O
best	O
of	O
both	O
worlds	O
"	O
solution	O
where	O
developers	O
would	O
be	O
able	O
to	O
more	O
finely	O
tune	O
the	O
rendering	O
mode	O
.	O
</s>
<s>
This	O
approach	O
would	O
overcome	O
the	O
shortcomings	O
of	O
the	O
potentially	O
large	O
up-front	O
download	O
that	O
Blazor	B-Operating_System
WebAssembly	B-Language
requires	O
and	O
the	O
constantly	O
open	O
SignalR	B-Language
connection	O
that	O
Blazor	B-Operating_System
Server	O
requires	O
.	O
</s>
<s>
This	O
version	O
of	O
Blazor	B-Operating_System
is	O
currently	O
part	O
of	O
the	O
.NET	B-Application
8	I-Application
roadmap	O
and	O
has	O
not	O
yet	O
been	O
released	O
.	O
</s>
<s>
Despite	O
the	O
confusion	O
that	O
the	O
descriptions	O
of	O
ASP.NET	O
and	O
Blazor	B-Operating_System
could	O
generate	O
,	O
the	O
latter	O
focuses	O
on	O
the	O
creation	O
of	O
web	B-Application
applications	I-Application
with	O
the	O
aim	O
of	O
using	O
the	O
C#	B-Application
programming	O
language	O
instead	O
of	O
the	O
JavaScript	B-Language
language	I-Language
,	O
which	O
is	O
commonly	O
used	O
in	O
this	O
type	O
of	O
application	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
.NET	B-Application
5	I-Application
,	O
Blazor	B-Operating_System
has	O
stopped	O
working	O
on	O
Internet	B-Application
Explorer	I-Application
and	O
the	O
legacy	B-Device
version	I-Device
of	O
Microsoft	B-Application
Edge	I-Application
.	O
</s>
