I searched a bit and could not find a right word for synchronization objects in Photon.
I want an MMO game that could have rapid changes of objects (doors, cars, boxes, barricades)
Unfortunately I saw that Photon is not good for this kind of thing, and that a good start would be for the ulink, but it is not as accessible to independent developers.
I hope I’m completely wrong and that something is “easy” and can continue with my idea.
thank you
Photon is good for “those things” (MMO) but it’s not even trying to be an out-of-the-box solution for them.
Photon Unity Networking (PUN) is much less usable for MMOs. It’s a framework that tries to mimick and improve Unity’s built-in networking workflow (which you wouldn’t use for a MMO either).
Better check out our regular Unity SDK (after login):
http://download.exitgames.com
This has a plain API which is built to be flexible and extensible. It communicates with the Photon Server by operations and events and those are the foundation to build your custom MMO if you like.
For an MMO, you will be working with the chosen networking solution for quite a while. You should assess them properly and find the one that fits your coding style and needs…
As much as i know, many MMOs including APB use normal game engines on the server. APB uses unreal engine on the server and i know many other games made with this kind of architecture. Take a look at heroengine’s architecture to understand more. They use same physics and AI and … on the server. They have special physics and AI servers but using unity for that kind of stuff is fully possible as well.
uLink is 550 euros or something like that for indies for a title and the trial can be used for long time.
If you want to choose easier, we have an article on it.
Many unity users love to create multiplayer games but wonder what to use between several available options, This article is trying to describe the possible features of the middlewares and requirements of any type of game to help them in this manner. It doesn’t compare technologies together one by one and feature by feature.
http://mindhammergames.com/index.php/products/learning-materials/37-choosing-the-best-networking-middleware-for-your-unity-multiplayer-or-mmo-game.html
We thought that the community requires to be more knowledgable on this. instead of doing one by one comparison between products, we give you the tools to do that easily for yourself.
Contact us for a little free consulting or paid support or just to say hello 
MindHammerGames