This is the 4872nd most frequent Russian word.
использовано
"Использовано" means "used" in English.
The word 'использовано' here functions as the past participle, indicating the means by which better results were achieved.
Эта техника была использована для достижения лучших результатов.
This technique was used to achieve better results.
The word 'использовано' emphasizes the reasoning—efficiency—in utilizing the resources.
Ресурсы были использованы рационально, чтобы избежать лишних затрат.
Resources were used efficiently to avoid unnecessary expenses.
Here 'использовано' conveys the singular instance in the past when the method was applied.