The co-creators of Spider-Man, Stan Lee and Steve Ditko sadly passed away.
Dan Slott's long tenure on Spider-Man came to an end.
Nick Spencer's The Amazing Spider-Man is great so far: Back to Basics was the title of his first arc but the name can extend to his run so far. Spencer gets the voices, Spidery solve things himself and the mystery about the identity of the centipede villain.
Chip Zdarsky's run on Peter Parker: The Spectacular Spider-Man ended with the best Spider-Man issue of the year with #310, fittingly called Finale. It's a must read. You must!
Spider-Man making his debut in an Avengers movie, Avengers: Infinity War.
The year ended with Spider-Man: Into the Spider-Verse getting rave reviews and deserved them.