BSS Cost Glide Path gen.

[kickstarter]

Помогите, плиз, понять, что это такое. (BSS Cost Glide Path) контекст:
Supplier must build BSS Cost Glide Path that will deliver incremental savings each year of the contract on the base services (fixed and variable services) and sites included in this Request For Proposal. If additional services and scope are added to the base in subsequent years Supplier and Manager will address during the annual budget cycle.

[kickstarter]

BSS - это bundled soft services, интересует только такое понятие как Cost Glide Path. Кто догадывается, что это?