ECMAScript 2017 (also known as ES2017 or ES8) is the eighth major release of the ECMAScript programming language. It introduces several new features and improvements, including async/await syntax for asynchronous programming, shared memory and atomics for better performance in parallel programming, and new methods and functions for working with strings and arrays. It is commonly used in web development, particularly for creating dynamic and interactive user interfaces.

Front End (Software Engineering) refers to the development of the user interface and user experience of web applications, focusing on the visual elements that users interact with directly. This skill encompasses knowledge of HTML, CSS, and JavaScript, which are used to create responsive and accessible designs that enhance usability. Understanding Front End (Software Engineering) enables the implementation of interactive features and ensures compatibility across various devices and browsers, ultimately improving user engagement and satisfaction.

Progressive Web Apps (PWA) is a web application development approach that allows websites to be designed and developed to appear and work like native apps on mobile and desktop devices. This approach combines the benefits of both web and mobile app development, creating highly accessible, responsive, and user-friendly web apps that can be accessed through a standard browser. This technology uses modern web technologies to deliver powerful applications without requiring users to download or install anything. PWA improves the user experience and offers an engaging experience to the users like native apps while ensuring that the website is fast, responsive, and easy to navigate.

Semantic UI refers to a front end interface framework used to build consistent web user interfaces with predefined styles and components. It is applied in software development to assemble layouts, forms, navigation elements, and other interface elements with a common visual structure. The skill involves selecting, configuring, and adapting the framework to support efficient development and maintainable interface design.

Web Engineering refers to the systematic approach to the design, development, and maintenance of web applications and services. This skill encompasses knowledge of web technologies, programming languages, and frameworks that facilitate the creation of user-friendly and efficient online platforms. Web Engineering is used to ensure the functionality, performance, and security of web applications, enabling effective user interaction and data management across various devices and environments.