You may have a collection of business cards from decades of business, or you just came back from a event, a convention, a meet up group with a new business card collection. As you look through them, each is different, the good ones, the ones you keep it is likely they all contain similar information elements, ultimately readability is key.
In a recent conversation during a business card design review, several employees that had not been a part of the company logo and identity program from the beginning of the graphic design process were brought in the room. This group of people had not been part of the discovery research process, the strategy development, the design development, all the many meetings and reviews that had previously occurred. None had any awareness of the goals, or objectives that had been agreed upon as part of the project proposal, design brief or what the graphic design project deliverables were.