The Selenium architecture is based on the W3C WebDriver Protocol (formerly JSON Wire Protocol). When you write a command in your script, it gets converted into a RESTful HTTP request. This request is sent to the Browser Driver (like chromedriver.exe), which acts as an HTTP server. The driver parses the request and uses the browser's native automation engine to execute the action. Finally, the response is sent back to your script indicating success or failure.
It's like ordering food: You (Client) call the restaurant (WebDriver). The waiter (Driver) takes your order and tells the chef (Browser). The chef cooks and the waiter brings the result back to you.
When you run `driver.get('url')`, what happens behind the scenes in the architecture?