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Implementation Planning

Decision​

An engineering, product, or platform team needs to decide what capabilities to implement so it can support supply-chain-security assurance claims.

What Can Go Wrong​

  • Implementation teams are given broad assurance goals without evidence requirements.
  • Technologies are selected before the decision, evidence, and lifecycle needs are understood.
  • Evidence is produced but cannot be verified by customers or downstream systems.
  • Implementation choices solve one lifecycle stage but fail after update, repair, or transfer.

Good Practice​

Implementation planning should start from the assurance decision, then define evidence needs, verification paths, lifecycle retention, and technology options. It should not start from a standards acronym alone.

What To Ask For​

Questions to ask suppliers​

  • What evidence will external recipients expect your implementation to produce?
  • Which lifecycle stages require supplier-generated evidence versus internally generated evidence?
  • What interfaces, formats, or repositories do recipients need to consume the evidence?

Questions to ask internally​

  • What decisions must customers, operators, auditors, or internal teams make with the evidence?
  • Which evidence should be produced automatically, and which can be process-based?
  • What are the minimum viable controls and the later maturity targets?

Questions to ask assessors / auditors​

  • Does the implementation plan connect controls to reviewable evidence and acceptance criteria?
  • Are responsibilities, ownership, and retention expectations documented?
  • Are limitations and residual gaps visible before deployment?

Questions to ask implementers​

  • Which systems produce, sign, store, verify, and refresh each evidence type?
  • What data model, trust anchor, API, or workflow needs to be implemented?
  • How will implementation choices be tested against procurement, acceptance, audit, and monitoring use cases?

Evidence And Artifacts​

Implementation may need device identity records, provisioning logs, signed manifests, reference measurements, attestation evidence, SBOM/xBOM artifacts, vulnerability records, update records, and lifecycle-state records.

Weak / Better / Stronger Answers​

Weak answer: We will implement attestation or SBOMs.

Better answer: We will implement specific evidence artifacts for defined decisions.

Stronger answer: We will implement evidence production, protection, exchange, verification, retention, and lifecycle refresh for defined assurance decisions, with clear limits and gaps.

Lifecycle Stages​

Implementation planning applies during design, sourcing, build, provisioning, acceptance preparation, deployment planning, update planning, operations, repair, transfer, and decommissioning planning. The implementation should identify which lifecycle stages produce evidence and which stages consume or refresh it.

Standards And Technologies​

Relevant implementation options may include TCG, GlobalPlatform, IETF RATS/EAT, CoRIM/CoMID, SPDX, CycloneDX, SPDM, OCP SAFE/Caliptra, TPM, DICE, TEE, Secure Element, update frameworks, and vulnerability workflow tooling.