Final answer:
The run time of a basic web app can be indefinite, dependent on available resources and server uptime. The 10-20 minute reference is likely to a specific task within an app. Development approaches have evolved from the simple tools of Web 1.0 to the more complex tools that characterize Web 2.0.
Step-by-step explanation:
The duration for which a basic web app can run is not inherently limited by the technology itself, but rather by the resources allocated to it such as server uptime, maintenance schedules, and associated costs. It's worth noting that the question seems to reference a process within a web app that takes 10-20 minutes, suggesting a specific task the app is performing, rather than the operational time of the app itself. In the early years of the web, known as Web 1.0, even those with modest skills could build websites, and tools like Microsoft's Frontpage simplified this task. However, with the transition to Web 2.0, the do-it-yourself (DIY) approach has largely evolved into more sophisticated development and deployment practices.