Campaign spikes are only useful when pick/pack can keep pace. Map your supplier lead times beside each planned spike, then add a buffer week for unexpected delays.
Use a shared calendar that color-codes owned channels versus paid placements. That single view prevents two teams from lighting the same SKU on the same day without noticing.
Close each month with a short retro: which spikes created returns or stockouts? Feed those lessons into the next quarter’s plan without blaming individuals—focus on the workflow gaps.