Add Tier 1 interaction capacity to a Dynamics 365 Marketing configuration with this 1-year interactions add-on pack. The subscription is intended for Marketing environments that require the interactions add-on package at the Tier 1 level. Its scope is an add-on entitlement, rather than a replacement for the underlying Dynamics 365 Marketing product. Microsoft 2D0770EBA5B7-1Y provides the Tier 1 and 1-year terms together in one ordering designation. Those two attributes matter when aligning an environment to a defined interactions-pack tier and subscription duration. The package is appropriate where the required Dynamics 365 Marketing configuration calls specifically for a Tier 1 interactions add-on. This option differs from a standalone application subscription because it is explicitly designated as an interactions add-on pack. It also carries a fixed 1-year term rather than an unspecified duration. Select it when the required product configuration is a Dynamics 365 Marketing interactions add-on at Tier 1, and retain the ordering code with the associated subscription records for accurate identification.