Well, well, well Believe me it's been tough getting my understanding around all the dots which we need to connect to make the GraphQL IDE to work, and top of it execute a successful query via it. I am writing this blog to show what all troubleshooting i did, Couple of mistakes which i found, some new things that i had to learn along the way to make it work, Different types of APIs, and their meanings, like Preview API, Delivery API, Token API, Admin API, but all in summary, after this blog, i am sure no one should land into the issue like i did, that is the purpose. NOTE: When you start reading out the documentation for the first time, there will be lot of confusions around what are all these APIs, and which one to use when? Different headers for different APIs, I will have a different blog explaining all of them but specially when you are working with or if you have questions around Authoring API, It is different because it does mutation operations against Sitecore CM, for CRUD ...
/* The only purpose behind the existence of this blog is to share as much as new technological things (which i think is new) */