Burst Heal
Choosing between a single large heal to pull an ally back from the kill threshold versus a steady trickle.
In the middle of a duel it is worth more to burst and keep an ally from crossing the kill line, while in neutral a thin trickle is enough. When to spend burst CDs (Bap window/Suzu/Trance, etc.) should be synced to the enemy's focus; healing poured out aimlessly (healbotting) does not arrive in time at the moment someone dies. Making healing land on timing rather than on total volume is what separates pros from amateurs. Trickle Heal is for sustaining neutral and for Brawl attrition, and you are expected to switch between the two.
Burst when an ally is taking focus and HP is dropping fast. Trickle when topping HP back up in neutral or after a stagger.
Trickling into an ally who is taking focus, arriving too late, and losing them. Spending burst CDs in quiet moments when nobody is dying, then being dry in the fight that matters.
Resource Trade
Spending a minor cooldown to force a major defensive one, netting an advantage for the real fight.
Peel
Switching mid-fight focus to protect a backline ally from a diving threat.
Concentrating heals and boosts on one ally to give them a structural advantage in their duel.
Flex Support
A support pick like Ana, Zen, or Bap whose damage output, debuffs, or utility swing fights beyond healing.