The Wait activity momentarily suspends executing a part of a workflow. It activates its outbound transition after a delay that may range from a few seconds to several months, which executes the activities placed afterwards.
The Wait activity is used to allow a certain amount of time to pass between two activities being executed. For example, to wait several days after an email delivery activity then analyze the opens and clicks generated during this period before performing any follow-up operations (reminder email, creating an audience, etc.).
The following example illustrates the Wait activity in a typical use case. An email invitation to an event is sent. 24 hours after it was sent, the email delivery logs are analyzed and a reminder email is sent to the people who received the first email but did not sign up.