<s>
Software	B-General_Concept
diversity	I-General_Concept
is	O
a	O
research	O
field	O
about	O
the	O
comprehension	O
and	O
engineering	O
of	O
diversity	O
in	O
the	O
context	O
of	O
software	O
.	O
</s>
<s>
The	O
different	O
areas	O
of	O
software	B-General_Concept
diversity	I-General_Concept
are	O
discussed	O
in	O
surveys	O
on	O
diversity	O
for	O
fault-tolerance	B-General_Concept
or	O
for	O
security	O
.	O
</s>
<s>
It	O
is	O
possible	O
to	O
amplify	O
software	B-General_Concept
diversity	I-General_Concept
through	O
automated	O
transformation	O
processes	O
that	O
create	O
synthetic	O
diversity	O
.	O
</s>
<s>
A	O
multi-variant	B-General_Concept
execution	I-General_Concept
environment	I-General_Concept
(	O
MVEE	O
)	O
is	O
responsible	O
for	O
selecting	O
the	O
variant	O
to	O
execute	O
and	O
compare	O
the	O
output	O
.	O
</s>
<s>
Another	O
approach	O
to	O
increase	O
software	B-General_Concept
diversity	I-General_Concept
of	O
protection	O
consists	O
in	O
adding	O
randomness	O
in	O
certain	O
core	O
processes	O
,	O
such	O
as	O
memory	O
loading	O
.	O
</s>
<s>
Recent	O
work	O
on	O
automatic	O
software	B-General_Concept
diversity	I-General_Concept
explores	O
different	O
forms	O
of	O
program	O
transformations	O
that	O
slightly	O
vary	O
the	O
behavior	O
of	O
programs	O
.	O
</s>
<s>
This	O
natural	O
diversity	O
can	O
be	O
exploited	O
,	O
for	O
example	O
it	O
has	O
been	O
shown	O
valuable	O
to	O
increase	O
security	O
in	O
cloud	B-Architecture
systems	I-Architecture
.	O
</s>
