# Introduction to Procurement
Welcome to the introduction of the Procurement Application. This guide is meant to give you an overview over the functionalities and core principles of this app.
# What is Procurement?
Procurement provides an API and intuitive user interface that allows Sellers (Suppliers) to manage all purchasing process related operations in one central place.
As a supplier procurement enables you to:
- Expose yourself to potential future customers and easily connect those
- Upload and manage your product catalogs, including customer specific catalogs and prices
- Receive and process orders from all your connected customers
- Issue invoices to your customers
# Procurement Parts
Procurement’s data model is build upon 4 distinct logical topics in order to facilitate an easy procurement process for Buyers (Consumers) and Sellers (Suppliers) that will be briefly introduced here and detailed further in their respective sections within the guide.
# Contract Management
This part covers everything related to managing business relationships, we call these
Contracts. A Contract is a two-sided agreement to trade goods using the Procurement application between a buying and a selling company. It needs to be requested via a
ContractRequest. Once established the Supplier can grant access to their product catalogs to the respective Consumer.
Learn more about how the Contract Management works.
# Product Catalogs
This part covers everything related to product catalogs, we call these
SalesGroups. It provides an interface and data model to create and store product related data such as specific attributes, packaging units, prices, product catalogs and product catalog prices.
Learn more about how Product Catalogs work.
# Order Management
This part covers everything related to orders and their respective deliveries. This includes how an order is received, how deliveries related to an order, how the procurements order state machine works and how an order will be able to transition throughout the states.
Learn more about how Orders and Deliveries work.
This part covers how invoices within procurement are working. This includes how they can be issued, accessed and changed. Please note that the Procurement’s invoice system if for informational purposes only and is not intended to replace the regular invoicing and payment process between Suppliers and Consumers.
Learn more about how Invoices work.