- Statement of Work (SOW)
- A contract document that defines the specific services, deliverables, timeline, and fees for a single engagement between a client and a service provider.
- Master Services Agreement (MSA)
- An umbrella contract establishing the general legal terms β IP ownership, liability caps, warranties, dispute resolution β that govern all SOWs issued under it.
- Deliverable
- A specific, tangible output the service provider must produce and hand over to the client as defined in the SOW β a report, codebase, design file, or trained model.
- Acceptance Criteria
- The measurable conditions a deliverable must meet before the client is contractually obligated to approve and pay for it.
- Milestone
- A defined checkpoint in the project schedule, often tied to a payment trigger, at which a set of deliverables must be completed and accepted.
- Scope Creep
- The gradual expansion of project scope beyond what the SOW defines, typically driven by client requests that were not priced into the original agreement.
- Change Order
- A written amendment to an SOW that documents and prices a change to the scope, timeline, or fees β the formal mechanism for managing scope creep.
- Time and Materials (T&M)
- A billing model in which the client pays for actual hours worked at agreed hourly rates plus reimbursable expenses, rather than a fixed project price.
- Fixed Price
- A billing model in which the service provider agrees to deliver the full SOW scope for a single lump-sum fee, regardless of actual hours incurred.
- Client Dependencies
- Assets, approvals, access, or decisions the client must provide on time for the service provider to meet the SOW schedule β the client's contractual obligations.
- Assumptions
- Conditions the service provider has treated as true when scoping and pricing the engagement; if an assumption proves false, the provider typically has the right to issue a change order.
- Retainage
- A percentage of the total fee withheld until final acceptance of all deliverables, used to ensure the provider completes the engagement before receiving full payment.