SimplyGo! is an additional feature in your ÖBB account. SimplyGo! makes it easier for you to buy tickets and travel on selected modes of transport. SimplyGo! recognises routes travelled between locations within Austria and along corridor routes using GPS tracking, calculates the appropriate fare and automatically invoices the journeys you have made on the following day using the saved credit/debit card. All you have to do is check in at the start of your journey before boarding the means of transport and check out again at the destination stop after getting off the means of transport.
You can find all the information about SimplyGo! in the SimplyGo! general terms and conditions and in the following answers to frequently asked questions, especially about the possible modes of transport that you can use.