<s>
Ion	O
is	O
a	O
data	B-Application
serialization	I-Application
language	I-Application
developed	O
by	O
Amazon	B-Application
.	O
</s>
<s>
The	O
text	O
form	O
is	O
a	O
superset	O
of	O
JSON	B-General_Concept
;	O
thus	O
,	O
any	O
valid	O
JSON	B-General_Concept
document	O
is	O
also	O
a	O
valid	O
Ion	O
document	O
.	O
</s>
<s>
Amazon	B-Application
's	O
Quantum	O
Ledger	O
Database	O
(	O
QLDB	O
)	O
stores	O
data	O
in	O
Ion	O
documents	O
.	O
</s>
<s>
,	O
an	O
open	O
source	O
SQL-based	O
query	O
language	O
also	O
by	O
Amazon	B-Application
,	O
is	O
built	O
upon	O
Ion	O
.	O
</s>
