So If you are trying to connect wifi devices, a limited number of those are native to Hubitat because Hubitat's core tenant is local control. Most wifi devices are cloud based. Now that is not to say that cloud based wifi stuff is not compatible with hubitat. Hubitat leave it open to the community to write integrations for wifi based devices... (For example, Bosch Home Connect wifi devices or Ring wifi devices) This has 2 caveats... The 1st is someone willing to write the integration/driver for said device. The second is the availability of an API. Without both they're not gonna work.
Your TUYA smart life switches are wifi and cloud based. There is a beta you can look here..
As for ip cameras, if they output http streams, you can put them into a tile with a refresh of one second. If you're looking to use them as triggers, you will need something like Camect (I love mine) or Blue Iris...
Most people here aren't interested in cloud based devices due to privacy, reliability etc. Personally I don't want to be beholden to either another company's servers or my internet provider.
One thing you can do with your connected devices on your alexa (also google or homekit) is to use virtual switches. So you make a virtual switch on Hubitat, and expose that to alexa. You then write a rule on your alexa to turn that switch on or off based on something doing something. Hubitat will see that switch is on or off and do something on the hubitat that you set. So, lets say you turn on the living room light, that will trip the virtual switch which will then tell Hubitat to raise your zwave thermostat to 70 degrees (f). It's actually easy and seamless.
