How to understand SaaS service architecture?

Question

Software design

Hello friends! Such a question is how to understand the technology of a service built on data parsing, for example:
https://explodingtopics.com/
https://publer.pro/

I wonder what docking looks like: Parsing => Converting to the desired form => Storage => Output to the frontend .

I am also extremely grateful for the advice of specialized literature. Interested in services built on data parsing. Thanks in advance!

Answer 1

how to understand service technology

look for reports or articles in which the authors of the services share their experience
here maybe either here or look at this guy, his service is definitely based on parsing.

Answer 2

There will be no profile literature here, as well as a clear answer to the question. Or rather, how to understand the architecture of the finished service - no way, this is a trade secret.
And how to build such a service - to formulate the requirements for the service and design the architecture for these requirements. Options - a million