Where does “отладка” come from?

отладка (Russian) comes from Russian отла́дить, from Russian ла́дить, from Old East Slavic ладити, from Proto-Slavic laditi, from Proto-Slavic lada.

отладка (Russian): debugging

Definitions

Step	Language	Word	Meaning
1	Russian	отла́дить	—
2	Russian	ла́дить	—
3	Old East Slavic	ладити	—
4	Proto-Slavic	laditi	to make order, make peace
5	Proto-Slavic	lada	—

отладка — Etymology, Origin & Word History | Etymology Explorer