This is the 3339th most frequent Russian word.
платформа
"Platform" – a flat, raised surface or a basis for activity or operation.
Here, 'платформа' refers to a physical structure at a railway station where passengers board and disembark from trains.
Вокзальная платформа была переполнена пассажирами.
The station platform was overcrowded with passengers.
In this sentence, 'платформа' is used metaphorically to describe a digital framework or service that offers resources.
Эта онлайн-платформа предоставляет множество образовательных материалов.
This online platform provides many educational materials.
Here, 'платформа' signifies a conceptual or software basis for facilitating data exchange.