A landing page is a standalone web page, created specifically for the purpose of a marketing or advertising campaign. It is designed to direct the visitor to take a specific action, such as making a purchase or filling out a form for more information. Landing page design involves creating a visually appealing and effective page that converts visitors into leads or customers.

Website design involves the creation and development of a website, including its layout, content, and overall appearance. It involves determining the structure and navigation of the site, as well as the design elements such as color scheme, typography, and images. Website design aims to create a user-friendly and visually appealing experience for visitors to the site.

Mobile app design involves the creation of user interfaces and user experiences for mobile devices such as smartphones and tablets. It involves designing the look and feel of the app, as well as determining how the app will function and how users will interact with it. Mobile app design aims to create a seamless and intuitive experience for users.

Web app design involves the creation of web-based applications that can be accessed through a web browser. These applications are usually more complex and interactive than traditional websites, and may involve features such as databases, real-time updates, and user input. Web app design involves designing the user interface and user experience, as well as determining the functionality of the app.