Where do I find the introduction what Sia is? I tried clicking around in the headers from OP, but couldn't find it within my very lazy tolerance.
https://support.sia.tech/article/dk91b0eibc-welcome-to-sia - this support article is also a good introduction to the network and why it was built
Also take a look at Skynet, a file sharing protocol built on top of Sia: https://siasky.net/
Reliability, redundancy, disaster recovery, cost cutting, and absolute focus on execution!