This is the 13095th most frequent Russian word.
масштабным
"Масштабным" means "large-scale" or "extensive."
The adjective 'масштабный' is used here to describe the project as 'large-scale', implying significant breadth or importance.
Это был масштабный проект, требующий координации множества ресурсов.
This was a large-scale project requiring the coordination of many resources.
In this sentence, 'масштабный' modifies the noun 'research' to express the extensive or comprehensive nature of the work.
Мы провели масштабное исследование для сбора необходимых данных.
We conducted a large-scale study to gather necessary data.
Here, 'масштабные' characterizes the noun 'changes' as significant or substantial in scope.