Colletti is a journalist, storyteller and business communicator. For twenty years, he has worked on digital communications for top companies. He has worked for Vodafone Italia and Technogym and is currently in charge of digital communications for Sanofi Italia.

He co-founded the Enterprise Generated Content observatory of Bocconi University and the job-community Wwworkers.it. For four years, he has organised the “Wwworkers Camp” at the Chamber of Deputies, dedicated to online workers.

He has worked for RAI, Repubblica, Rai3 and Radio24. He wrote and presented the first online broadcast on social TV by Rai.tv. Currently, he writes for Sole24Ore, Metro, StartupItalia! and Millionaire. He has a blog on Nòva for Sole24Ore another for Fatto Quotidiano.

He has written numerous manuals on business culture and new technologies for Gruppo24Ore: TV fai-da-web (2010), Wwworkers: i nuovi lavoratori della rete (Il Sole 24 Ore, 2011), Vendere con le community (Il Sole 24 Ore, 2012 e 2014), and Social TV (with Andrea Materia, Il Sole 24 Ore 2012).
His books are SEI UN GENIO! (Hoepli, 2017), G-Factor (Egea, 2018), Spider brand. I trenta superpoteri dei nuovi eroi del marketing (Egea, 2021) and Siamo tutti influencer. Metaverso, blockchain e creator economy. La mappa della nuova era di internet (ROI Edizioni, 2022).