Web 1.0 Only allowed the website to share information in one direction, so text, images or links could only be read and shared from the site to the visitors.
A smart contract is a Web 2.0 tool. It can hold money, it can be programmed to disseminate money from person A to person B without middle man, no one can meddle with it and information in the Tx is transparent.
The smart contract Tx is written in Ethereum code, which is on the block chain & easy for all to read , it can not be tampered with, which makes it very trustworthy and transparent.