This document is an introduction to software engineering by Arry Akhmad Arman from the School of Electrical Engineering and Informatics at Institut Teknologi Bandung in Indonesia. It discusses the growing importance of software in modern society and how software has become essential across many industries. It also outlines different types of software like systems software, real-time software, business software, and embedded software. The document traces the evolution of software and how the software industry has become strategic and innovative.