<s>
A	O
Cloud-Native	B-General_Concept
Network	I-General_Concept
Function	I-General_Concept
(	O
CNF	O
)	O
is	O
a	O
software-implementation	O
of	O
a	O
function	O
,	O
or	O
application	O
,	O
traditionally	O
performed	O
on	O
a	O
physical	O
device	O
,	O
but	O
which	O
runs	O
inside	O
Linux	O
containers	O
(	O
typically	O
orchestrated	O
by	O
Kubernetes	B-General_Concept
)	O
.	O
</s>
<s>
The	O
features	O
that	O
differ	O
CNFs	O
from	O
VNFs	O
(	O
Virtualized	B-Architecture
Network	I-Architecture
Functions	I-Architecture
)	O
,	O
one	O
of	O
the	O
components	O
of	O
Network	B-Architecture
Function	I-Architecture
Virtualization	I-Architecture
,	O
is	O
the	O
approach	O
in	O
their	O
orchestration	O
.	O
</s>
<s>
In	O
ETSI	O
NFV	O
standards	O
,	O
the	O
Cloud-Native	B-General_Concept
Network	I-General_Concept
Functions	I-General_Concept
are	O
a	O
particular	O
type	O
of	O
Virtualized	B-Architecture
Network	I-Architecture
Functions	I-Architecture
and	O
are	O
orchestrated	O
as	O
VNFs	O
,	O
i.e.	O
</s>
<s>
Kubernetes	B-General_Concept
)	O
.	O
</s>
<s>
Lifecycle	O
manageable	O
by	O
Kubernetes	B-General_Concept
,	O
using	O
container	O
images	O
registries	O
such	O
as	O
OCI	O
Docker	B-Language
,	O
and	O
OS	O
container	O
runtime	O
.	O
</s>
<s>
Through	O
service	B-Protocol
discovery	I-Protocol
and	O
orchestration	O
,	O
a	O
system	O
based	O
on	O
CNFs	O
will	O
be	O
more	O
resilient	O
to	O
node	O
failure	O
.	O
</s>
<s>
A	O
specification	O
of	O
criteria	O
to	O
classify	O
and	O
characterize	O
Cloud	O
Native	O
VNF	B-Architecture
implementations	O
can	O
be	O
found	O
in	O
ETSI	O
GS	O
NFV-EVE	O
011	O
.	O
</s>
<s>
The	B-Operating_System
Linux	I-Operating_System
Foundation	I-Operating_System
backed	O
Cloud	B-Application
Native	I-Application
Computing	I-Application
Foundation	I-Application
project	O
is	O
actively	O
supporting	O
companies	O
in	O
contributing	O
to	O
open-source	O
projects	O
like	O
Kubernetes	B-General_Concept
or	O
Prometheus	B-Language
,	O
upon	O
which	O
Cloud	O
Native	O
Network	O
Functions	O
can	O
be	O
based	O
on	O
.	O
</s>
<s>
The	O
CNCF	O
project	O
also	O
created	O
a	O
CNF	O
Testbed	O
,	O
in	O
order	O
to	O
facilitate	O
a	O
common	O
test-ground	O
for	O
various	O
cloud-native	B-General_Concept
network	I-General_Concept
functions	I-General_Concept
.	O
</s>
