A business card is a compact and professional tool for sharing your contact information and leaving a lasting impression. It typically includes your name, job title, company logo, and essential details like phone number, email, and website. Business cards are highly customizable, with options for various sizes, materials, designs, and finishes, such as matte, glossy, or embossed. They serve as a quick and effective way to establish connections and represent your brand or identity in a memorable way.