Source-to-Contract (S2C)

Source-to-contract (S2C) is the procurement process that covers everything from identifying a sourcing need to having a signed contract with a selected supplier. It is the strategic upstream portion of the procurement lifecycle, focused on finding the right suppliers and negotiating the best terms before any purchasing begins.

The S2C Process Steps

• 1. Spend analysis: understanding what you're buying, from whom, and at what prices to identify sourcing opportunities
• 2. Category strategy: developing an approach for each spend category (consolidate suppliers? diversify? renegotiate?)
• 3. Supplier identification: finding potential suppliers through directories, referrals, or market research
• 4. RFx process: sending RFQs (Request for Quotation), RFPs (Request for Proposal), or RFIs (Request for Information) to shortlisted suppliers
• 5. Bid evaluation: comparing supplier responses on price, quality, delivery, and other criteria
• 6. Negotiation: finalizing terms, pricing, and conditions with the selected supplier
• 7. Contract execution: signing the agreement that governs the ongoing supplier relationship

S2C vs. P2P (Procure-to-Pay)

S2C covers the strategic phase: find suppliers, get quotes, negotiate, sign contracts. P2P covers the operational phase: requisition, order, receive, pay. Together, S2C and P2P form the complete source-to-pay (S2P) lifecycle.

Think of it this way: S2C answers 'who should we buy from and at what terms?' P2P answers 'how do we place orders, receive goods, and pay invoices?'

S2C for Small Businesses

Enterprise S2C involves complex category strategies, multi-round RFx events, and formal contract management. For SMBs, the practical version is simpler but follows the same logic:

• Identify what you're buying regularly (your top spend categories)
• Find 3-5 potential suppliers for each category
• Send structured RFQs and compare responses
• Select the best supplier based on price, quality, and reliability
• Agree on terms (even if it's just an email confirmation rather than a formal contract)

Tools like AuraVMS handle the RFQ-to-selection portion of S2C: sending quote requests, collecting standardized responses, comparing with L1/L2/L3 ranking, and placing orders against winning quotes.

S2C Outsourcing

Some organizations outsource parts of their S2C process to procurement consulting firms or managed service providers. This is common for complex sourcing events, international procurement, or categories requiring specialized expertise. The outsourcing provider handles supplier identification, RFQ management, and negotiation on behalf of the buying organization.