<s>
Application	B-Application
performance	I-Application
engineering	I-Application
is	O
a	O
method	O
to	O
develop	O
and	O
test	O
application	O
performance	O
in	O
various	O
settings	O
,	O
including	O
mobile	O
computing	O
,	O
the	O
cloud	O
,	O
and	O
conventional	O
information	B-General_Concept
technology	I-General_Concept
(	O
IT	O
)	O
.	O
</s>
<s>
Application	B-Application
performance	I-Application
engineering	I-Application
attempts	O
to	O
test	O
software	O
before	O
it	O
is	O
published	O
.	O
</s>
<s>
Techniques	O
include	O
network	B-Protocol
virtualization	I-Protocol
.	O
</s>
