Raiding history - Explain what raids you have completed and when
Started raiding in BC, all the way through WOTLK and Cata.
Stopped at the beginning of MoP (after HoF) and resumed real raiding in BFA.
Always tanked, always with a druid or DK, since BFA with monk.
I have spent some time healing on my druid as well.
Do you use your abilities in a rotation or priority system for optimal performance? Can you describe, briefly, how it works? Why?
Yes, due to the debuffs and buffs they provide. Keg smash is always kept on CD, blackout strike as much as possible, breath of fire is used when available. Tiger palm is the filler.
That is the basic rotation or prioritization of a Brewmaster.
Why do you gear the way you do? Why do you have these items and enchants?
Going for best secondary stats when you have the biggest ilvl.
Tanking is very dependent on the main stat (Agi, Str, Stamina) so sometimes you sacrifice a bit of versa or mastery for the sake of more Agility and you make up for it with enchants and gems.
Add a link to your raid UI
I use ElvUI and Weakauras, sorry can't provide a picture right now.
Share a Speedtest.net link of your internet connection connecting to a server in France or Germany (location of game servers)