Hey Guys, So this post will focus on how one can invoke any web service class( REST / SOAP ) without using any Authentication/Username & Password. Of course, people who are working on Public domains will understand why we need to web services without any authentication. Simple Example: There is a Data sitting in your org (say SFDC ) which is not harmfull if exposed to any requester. ( Examples of such Public Web services are UBER, google Maps). IMPORTANT : You must have created your own site. Now as a demo you will visit my website built on force.com Site and fill in the form. Once you land on the page, click Rest Example Tab. Lets hit this. later you will click this link appending the same Email id which you gave to create the record. once you click the above link, paste the email id at the end of the URL in the browser. You just hit a public Restful web-service. You created a record in someone's anonymous site and checked how many records you actually c...