'''This page describes the 2017 Mozilla All Hands event.''' You may instead want [https://wiki.mozilla.org/All_Hands/SanFrancisco2018 '''All Hands SF 2018''']
'''What is it?''' -- Multiple team meetings, happening in the same city, at the same time + some opportunity to get together as one big group as well as with other teams as it makes sense. Then, on the last day, we have a fun social event for all, Mozilla-style!