Landing pages do not always have separate domains from your website. You can host landing pages on your main domain using subdirectories. For example, yourdomain.com/landingpage. This method keeps everything under one domain. You can also use subdomains like landingpage.yourdomain.com. This keeps the landing page separate while still using your main domain. Some people choose to use entirely separate domains for landing pages. This option might help with tracking and branding. Using a separate domain can also make the page look independent. The choice depends on your goals and how you want to manage your website.