Chromecast is Consumer Electronic Control (CEC) compatible, to use it you will need:
a TV or monitor with at least one open HDMI port, a good WiFi network connection.
And then Using apps on your mobile device or computer, you essentially hand off, or cast, content to the Chromecast, using the information it receives, the Chromecast finds the material on the Internet and streams it directly from the source.
I hope this answer your question.