JavaScript has come a long way since its inception in 1995. Created as a scripting language for web browsers, it has now become a ubiquitous programming language that powers much of the web. JavaScript's success is largely due to its ability to run in a browser, but that changed when NodeJS came along.

NodeJS is an open-source, cross-platform JavaScript runtime environment that allows developers to run JavaScript on the server side. NodeJS was first released in 2009 and has since become a popular choice for building back-end services and applications. It has drastically changed the landscape of JavaScript development and enabled developers to build scalable, high-performance applications using JavaScript.

Before NodeJS, JavaScript was limited to running in the browser. This meant that developers had to rely on other languages, such as PHP or Ruby, to build server-side applications. This often required developers to learn multiple programming languages and architectures, which made development more complex and time-consuming.

NodeJS changed all that by bringing JavaScript to the server side. It allows developers to build back-end services and applications using the same language they use on the front end. This has simplified the development process and made it easier for developers to build full-stack applications.

NodeJS's event-driven, non-blocking I/O model also makes it well-suited for building real-time applications, such as chat applications or online games. It can handle a large number of simultaneous connections without consuming excessive server resources. This has made it a popular choice for building web applications that require real-time functionality.

One of the key advantages of NodeJS is its package manager, npm. npm is the largest software registry in the world and makes it easy for developers to share and reuse code. This has created a vibrant ecosystem of open-source modules and libraries, which has made it easier for developers to build complex applications quickly.

NodeJS has also brought JavaScript to the world of microservices. Microservices architecture involves breaking down large applications into smaller, independently deployable services. NodeJS's lightweight, scalable architecture is well-suited for building microservices. It has also made it easier to build serverless applications, which rely on cloud services for computing resources.

In conclusion, NodeJS has drastically changed the landscape of JavaScript development. It has enabled developers to build full-stack applications using a single language, simplified the development process, and made it easier to build real-time and microservices-based applications. With its vibrant ecosystem and growing popularity, NodeJS is set to continue shaping the future of JavaScript development.