<s>
In	O
distributed	B-Architecture
systems	I-Architecture
,	O
observability	O
is	O
the	O
ability	O
to	O
collect	O
data	O
about	O
programs	O
execution	O
,	O
internal	O
states	O
of	O
modules	O
,	O
and	O
the	O
communication	O
between	O
components	O
.	O
</s>
<s>
To	O
improve	O
observability	O
,	O
software	O
engineers	O
use	O
a	O
wide	O
range	O
of	O
logging	B-Application
and	O
tracing	O
techniques	O
to	O
gather	O
telemetry	O
information	O
,	O
and	O
tools	O
to	O
analyze	O
and	O
use	O
it	O
.	O
</s>
<s>
Similarly	O
,	O
software	B-Operating_System
observability	I-Operating_System
measures	O
how	O
well	O
a	O
system	O
's	O
state	O
can	O
be	O
understood	O
from	O
the	O
obtained	O
telemetry	O
(	O
metrics	O
,	O
logs	O
,	O
traces	O
,	O
profiling	O
)	O
.	O
</s>
<s>
This	O
is	O
similar	O
to	O
other	O
computer	O
science	O
abbreviations	O
such	O
as	O
i18n	B-General_Concept
and	I-General_Concept
L10n	I-General_Concept
.	O
</s>
<s>
time	O
in	O
seconds	O
since	O
last	O
garbage	B-General_Concept
collection	I-General_Concept
.	O
</s>
<s>
Furthermore	O
,	O
their	O
cardinality	B-Application
can	O
quickly	O
explode	O
the	O
size	O
of	O
telemetry	O
data	O
.	O
</s>
<s>
suggest	O
that	O
the	O
pillars	O
of	O
observability	O
are	O
high	O
cardinality	B-Application
,	O
high-dimensionality	O
,	O
and	O
explorability	O
.	O
</s>
