It depends on how would you use the Robot to run your process.
Unattended Robot can be scheduled from Orchestrator to run at a certain time/day/week etc. Also you can start a process on an Unattended Robot directly from Orchestrator without having to be logged into the machine that the Robot is running.
Attended Robot can only start to run processes after a human user intervention. It can be connected to Orchestrator (because it can make use of Assets, Queues, it takes it’s license directly when connecting to Orchestrator, you can monitor there how many Robots of each type you have etc)
If you need only 2, one for development and one for production, then yes.
There are different license types: for development you will need Studio, for the rest Robot license. Please contact sales in order to have a detailed answer regarding this matter: Contact Sales - RPA Business Process Strategy | UiPath
Do you mean with “attended” bot, if I connect to Orchestrator, I don’t have to purchase a OC license?
Or is the OC license fee the same as for “unattended” bot?