Here's a neutral and interesting summary of the text in one paragraph: Creating on-demand video calls can be achieved with just three simple steps, utilizing the Daily.co API and a cloud development environment like repl.it. First, a "start call" button is created that adds an iframe to a web page, allowing users to initiate a video call. Next, an HTTP endpoint is spun up using repl.it's help, which generates a unique video call link each time the button is pressed, and returns room info for the newly created room. Finally, the page URL is modified so that it can be shared with others, enabling seamless invitation and joining of calls, while also allowing for easy implementation of additional features such as leaving the call.