Traditionally, ABM campaigns are broken into three tiers:

• One-to-one: targeting between 1-5 accounts
• One-to-few: targeting between 5-15 accounts
• One-to-many: targeting 15-100+ accounts

In an ABM-at-Scale model, however, the ABM pyramid can be extended to include a fourth tier: 

• One in which more than 100,000+ accounts can be targeted at a time, in the same personalised manner as the three standard ABM tiers.