Depending on your needs and preferences, there are different types of IA diagrams and prototypes that you can create. Sitemaps, for example, are graphical representations of the structure and organization of your website or app, while wireframes are low-fidelity sketches or mockups of the layout and elements of each page or screen. User flows illustrate the steps and actions users take to complete a task or achieve a goal on your website or app. Prototypes are interactive versions of wireframes or mockups that simulate the functionality and behavior of your website or app. You can create IA diagrams and prototypes using various tools, such as pen and paper, whiteboards, sticky notes, or digital software such as Balsamiq, Lucidchart, or Figma. Balsamiq is a web-based tool that lets you create wireframes and prototypes quickly and easily. Lucidchart is a cloud-based tool that lets you create sitemaps, user flows, and other diagrams using shapes, lines, icons, and text. Figma is a web-based tool that lets you create wireframes, prototypes, and high-fidelity designs using vector graphics, grids, layers, and animations.