I am having a very hard time in finding any informaiton on how I can do a Post by logging into the server with these parameters

let parameters: Parameters = ["username": username, "password": password]

and my return from the server would be

if let userID = jsonResponse["user_id"] as? String, let customerID = jsonResponse["customer_id"] as? String

Can someone please help me on where I can this information.

Hello, without 3rd party libraries you can use URLSession. For example like in this gist - https://gist.github.com/dmathewwws/63064a4114fba3769448602208f66c0d#file-urlsession-post-swift-L26-L27

You can get an app like Postman, Paw and similar to test sending POST requests before implementing them to validate that server responds correctly.

AFTER viewing this video I was able to understand how it works. Here is the video for anyone who wants to understand Post 200 https://www.youtube.com/watch?v=hDlPaOQOlHs&t=232s