If the company serves millions of users, they want to make sure that all the systems are running smoothly. So, there is no interruption in the operations. Companies choose the languages and frameworks for backend development every day, considering the load their software would handle. Node.js is a popular choice for the backend development, but it is not the only framework out there.
software
Work on other developer’s code: when another developer can take care of half-coded app and make it work.
Any software development project, even the smallest one, is a challenge. Sometimes it happens that after hiring a developer or even a team, you come up to the point when they can’t finish it up. It can be a lack of skills or, in the worst scenario, vanish and stop answering your calls. You have a bunch of code, half of your initial budget and severe issue for yourself and your business.