It's indeed not wise to use technologies only one employee knows. The best way is to chose technologies together and find developers who want to learn those. Yo

It's indeed not wise to use technologies only one employee knows. The best way is to chose technologies together and find developers who want to learn those. You have to motivate your colleagues to jump on board. And tell the senior developer websites will be more and more depending on JavaScript. It's not 2000 anymore.