Microsoft Edge brings forth a new feature called Cast media to device. It allows you to mirror the content of your web browser to a Smart TV connected to the same WiFi network. Here are the steps to set up media casting with Microsoft Edge.
N.B. This procedure requires a Miracast, SmartShare, or DLNA compatible TV.
Mirror Web Pages to a Smart TV with Microsoft Edge
Open Microsoft Edge and navigate to the desired web page. Click on the More menu > Cast media to device:
The compatible devices will be shown in a list:
Once done, select your Smart TV from the list of devices and wait until the connection is established: