Difference between traditional office system and modern office system?

The most significant difference is that the traditional office system seeks to isolate employees from each other through cubicles and actual rooms. But the modern office system seeks to encourage interaction and cooperation among employees by being open aired work spaces.

Another difference is that the traditional office gives an immobile desk and a chair to each employee. Advanced offices might have desks that can be lifted and lowered; so that the employee can stand at their desk if they so choose. In some instances there are no chairs; the employees are expected to stand. (There are break rooms where they can sit, along with others, and talk and rest.)

Finally, conferencing for traditional office systems is done in person where employees gather in a large conference room or they gather in a teleconference room to confer with employees remotely. Now conferencing is done at the employee's work place using the computer and conferencing tools like Zoom.