What technology stack does Facebook use?

Does it really matter which technology stack to use to build a SaaS based Enterprise product?

• Java/Scala, .NET, PHP, Python, Ruby or Node.js. Does it matter which stack we use to build?

• Answer:

  It does matter a) Will you get enough programmers in your area for a given stack. Java chances are you will find many senior developers vis a vi say Node.js, b) Certain languages do a good job in a given domain. for e.g. if you are developing an enterprise app for say statistics may be you are better off with R programming language. c) Languages like Ruby, PHP, Python allow you to achieve more with lesser lines of code. You could possibility iterate faster with them then Java/.NET, d) If you are accustomed to a stack you better stick with it for you would be more productive in it, e) Node.js still has a nascent third party library support ecosystem say vis a vi Java. If you are a developer, business development you need to choose based on what works better for you. There are always trade offs.