An invitation card is a printed or digital card used to invite people to an event, such as a wedding, birthday party, or corporate gathering. It typically includes essential details like the event's date, time, location, and RSVP information. The design and wording can vary based on the occasion and the host's preferences. These cards serve as a formal way to communicate the event's significance and encourage guests to attend. They can be customized with themes, colors, and images that reflect the nature of the event, making them a personal touch for celebrations like weddings or anniversaries.