Deno 2.0 marks a significant evolution in the JavaScript runtime landscape by introducing backward compatibility with Node.js and npm, addressing previous adoption barriers despite its enhanced security and simplicity over Node.js. Developed by Ryan Dahl, Deno initially aimed to rectify what he perceived as Node.js's complexities and security issues by aligning more closely with ECMAScript standards and simplifying dependency management through direct URL imports. The new version builds on this foundation by allowing seamless interoperability with Node.js infrastructure, supporting built-in Node.js modules, and enabling the use of npm packages within Deno projects. This allows developers to leverage familiar Node.js tools while benefiting from Deno's security model and modern JavaScript features. Deno 2.0 also introduces long-term support (LTS) channels, providing stability and predictability for large-scale projects and enterprises, thus making it a more viable option for production environments. By offering these enhancements, Deno 2.0 aims to facilitate a gradual transition for developers who wish to explore its advantages without abandoning the well-established Node.js ecosystem.