With simultaneous interpreting, messages are conveyed in real time, that is, speakers and interpreters speak at the same time but through different technical channels. It is quick, dynamic, and avoids making events longer. Usually, it is the preferred option for workshops, conferences, webinars and meetings with large audiences.
With consecutive interpretation, interpreters take down notes and convey the message after speakers make a pause. This means events tend to be longer, since the message is conveyed first in the original language and then in the other language. It may be a good choice for meetings with few participants.