The marketing people at Osram don’t seem to be able to settle on a name for their smart devices line. They keep changing it, as well as changing whether they will have one name for the entire world or different names for different regions.
For a long time the company was known as “Sylvania” in North America and “Osram” in Europe.
But then when they introduced their smart devices, they called all of those “Osram Lightify” no matter what region they were sold in.
North American retailers didn’t like that because they like to stock all of the brand together, so they switched back to calling the line “Sylvania Lightify.” .
Then they sold those lines to a Chinese company, MLS, and decided they would change the company’s name worldwide to LEDVance, which looks good on paper, but is almost impossible to say.
So after about a year they decided to go back to using the Sylvania name again in North America, but instead of calling the smart line “Lightify,” it’s now “Sylvania Smart+.”
The brand name in Europe became “Osram Smart+”
It’s been the same devices all along, it’s just the name that has changed.
So if you are looking for device type handlers or device discussions, just be alert to the fact that the name has changed over time.
And knowing these folks, it will probably change again in 2018. 
2018 Europe:
2018: US:
