There's a whole lot of buzz about the #sharingeconomy. Many seem to think it is something new, with some calling for a 'new economics' to explain it while others deride the 'gig economy' as a higher level of exploitation, inequality, and poverty. Neither is a good analysis.
First things firs: the sharing economy was facilitated by advances in technology alongside consumer preferences changing from goods to services and thus from ownership to lease. These are not separate processes, but mutually constituting changes where each increases the other.
The advances in technology that brought about the sharing economy are those that allow for cheaper, faster, and more accurate communication, verification of factual claims, decentralized corroborated trust/reputation etc. They overall lower transaction costs by making information