The segwit protocol upgrade was the biggest and most controversial software change in Bitcoin’s history. Listen to Aaron Van Wirdum‘s article at BitcoinMagazine.com to learn why it was needed, and the many twists and turns it took to get the code live on Bitcoin’s mainnet.

Link to the article at Bitcoin Magazine:
https://bitcoinmagazine.com/articles/long-road-segwit-how-bitcoins-biggest-protocol-upgrade-became-reality/

Link to further details on SegWit’s many benefits:
https://bitcoincore.org/en/2016/01/26/segwit-benefits/