The speed at which they can communicate to you is great! I love that my team has access from anywhere in Australia (even if we are not physically present).
We have an internal portal for our teams but it doesn't sync up as well or quickly enough when communicating internally about things like safety processes/ procedures etc - so this really does help us keep everyone organised throughout all our sites around Oz!! Some aspects could do be improved upon / added features would make life easier sometimes- however its very easy once set up & running smoothly! It's amazing how much time savings there is by using OE compared with emailing back n forth via other services where communication takes longer due too multiple emails being sent before getting responses out etc!!