What information systems (with a web interface) are usually written for government customers?

Question

Business Informatics

Tell me why everyone always writes in .net for government customers? Or do they also write in php? And if you write in .net, do you need to purchase licenses for anything?

Answer 1

Yes, on anything. Specifically, in the office where I work, for the public sector they write in php (yii2 / symfony), js (angular / vue), database (postgresql). If some specific things are needed, in other languages, then programmers are hired purely for this on a specific project, after the project is completed, they are fired)

Answer 2

I will answer the second part of the question. You don't need a license to write in .net (a controversial issue about a license for Windows :) ) Projects are written in visual studio, each version has the simplest free one (the latter is called community). It also comes with a stripped-down version of SQL Server. This is quite enough for development.
For cooler versions (they have additional optional features), licenses are expensive.
But to publish an application, you need licenses for windows server and MS SQL server.
That is, there may be a situation when you have a license for Windows 10 at work, a license for visual studio ultimate, a licensed MS SQL with management studio, and all licenses on the servers. But when you are programming at home for yourself, you can have a pirated Windows, a free studio and no sql management studio, and you will be as comfortable as at work.
I’ll also clarify that if you make a project for yourself on the .net stack, then renting servers with *nix systems will be much cheaper precisely because of the lack of licenses, for example, the most deshman shared hosting on Linux costs 65 rubles per month, and a similar configuration for Windows is already 300 rubles a month.
Although it has already become possible to write on .net core and compile under Linux servers, but there you need to bother