There is no abode/smartthings integration except by using either Ifttt or echo as a “man in the middle.“
For example, you could have an echo routine (not a smartthings routine) so that an abode sensor being triggered would then turn on a virtual switch in SmartThings and you could have that switch coming on be the trigger for pretty much anything smartthings can do.
FAQ: Can I trigger an Echo Action without Speaking to It?
That said, we need more details about what you think smartthings can do for you that abode cannot. Abode works with many of the same devices, in particular as far as lights, so I’m just not sure what you think you’re gaining by adding smartthings to the mix. So it’s hard to say whether it would be a good match to your needs or not.
As far as the Wi-Fi sockets, there is no standardised Home Automation profile for Wi-Fi, every manufacturer makes up their own commands. See the FAQ for the options if the device is not listed in the app as already having an integration: