Closed source software (also known as proprietary software), the public is not given access to the source code, so they can’t see or modify it in any way.
Examples: Microsoft Windows, Apple macOS

While open source software is a source code that is publicly available to anyone who wants it, and programmers can read or change that code if they d…[Read more]

A progressive web app (PWA) is an app that’s built using web platform technologies, but that provides a user experience like that of a platform-specific app.

Like a website, a PWA can run on multiple platforms and devices from a single codebase. Like a platform-specific app, it can be installed on the device, can operate while offline and in the…[Read more]

Information system is a collection of interlinked and dependent parts that are organized to collect and input data, process the data into information, output the information to users, and provide feedback to the system with the goal of meeting the complete informational needs of the organization.

Source:
lis-11 PPT