Activities/functions :

Strategic

Tactical

Operational

Strategic :

Strategic network optimization, including the number, location, and size of warehouses, distribution centers and facilities. 

Strategic partnership with suppliers, distributors, and customers 

Product design coordination so that new and existing products can be optimally integrated into the supply chain, load management 

Information Technology infrastructure to support supply chain operations.

Where-to-make and what-to-make-or-buy decisions

Aligning overall organizational strategy with supply strategy

 Tactical :

Sourcing contracts and other purchasing decisions.

Production decisions including contracting, locations, scheduling, and planning process definition

Inventory decisions including quantity, location, and quality of inventory.

Transportation strategy including frequency, routes, and contracting.

Benchmarking of all operations

Milestone payments.

Operational :

Daily production and distribution planning

Production scheduling for each manufacturing facility in the supply chain (minute by minute).

Demand planning and forecasting , coordinating the demand forecast of all customers and sharing the forecast with all suppliers.

Sourcing planning , including current inventory and forecast demand, in collaboration with all suppliers. 

Inbound operations-transportation from suppliers and receiving inventory.

Production operations

Outbound operations--fulfillment activities and transportation to customers.

Order promising, accounting for all constraints in the supply chain, including all suppliers, manufacturing facilities, distribution centers, and other customers.