What are websites like Ostrovka, Aviasales, etc. written in?

Question

Programming languages

What programming languages ​​are used by sites for finding hotels, tickets (Aviasales, Ostrovok, Rumguru, etc.)? First of all, I am interested in the implementation of a search on other sites with information in one form (for example, search on the sites of air carriers, their comparison, the choice of convenient parameters, as is done by many intermediaries).

Answer 1

99.9% - they do NOT have a search on the websites of air carriers. There is a data exchange agreement through a certain API

Answer 2

yes, in general, it doesn’t matter
if it’s even in php, even in ruby, you can write
in particular airsales in ruby, they have a development office in Thailand.
you can even send a search request to the api of the booking systems, just use wget or curl without any programming languages.