Is PlayStation Network (PSN) free?

It is important to highlight the distinction between the PSN and PS Plus since one of them is a free service while the other requires a paid subscription.

PS Plus/PS Now Card Conversion Rates (All Countries, so far) : r/PlayStationPlus

Free £10/$10 PSN credit is being given out by Sony to celebrate 10 years of Plus

UPDATE: All-new PlayStation Plus launches in June with 700+ games and more value than ever – PlayStation.Blog

PlayStation Plus drops new free games worth over £600

PS5 PS Plus Collection: How to Claim and Access Your Games

PlayStation Plus review: Premium, Extra and Essential

Ghost of Tsushima: Legends will be free on PlayStation Plus

PlayStation Plus Essential: suscripción de 12 meses

How to Create a PlayStation Network Account