Can you expose Home Assistant on the internet?
Just putting a port up is not secure. You should definitely consider encrypting your traffic if you are accessing your Home Assistant installation remotely. For details please check the set up encryption using Let’s Encrypt blog post or this detailed guide to using Let’s Encrypt with Home Assistant.
How does Home Assistant communicate?
Home Assistant communicates with your devices locally, and will fallback to pulling in data from the cloud if there is no other option. No data is stored in the cloud, and everything is processed locally.
What is Home Assistant Io?
Home Assistant is a free and open-source software for home automation designed to be a central control system for smart home devices with a focus on local control and privacy.