CTA means call to action, which is the part where you ask people to click, sign up, or buy something. Urgent CTA means giving people a reason to act now instead of later. This can be done by using time limits, limited space, or explaining what they may miss if they wait. The message should still sound calm and clear, not like a threat. I think clear reasons work better than loud words. What ideas help create urgency in a calm way for marketing messages and buttons online?