PQC Platform

How to Plan and Execute Migration

A PQC platform is what you use when post-quantum cryptography is no longer a theory exercise and becomes an enterprise migration program. The platform's job is not to teach cryptography. Its job is to help you discover where crypto lives, prioritize what matters, coordinate remediation across owners, and prove progress over time.

A successful PQC program depends on continuous cryptography management, not one-time reporting — which is what AQtive Guard is built for.

Why a platform approach matters

PQC is a multi-system, multi-team, multi-vendor problem. A platform becomes necessary when:

  • cryptography is spread across many apps and services
  • open-source dependencies make usage hard to see
  • ownership is fragmented across product teams
  • you need measurement and governance for leadership and compliance

If you try to do this with spreadsheets and one-off scripts, you can start, but you will not finish.

Phase 1: Discovery and inventory (the foundation)

Before you talk about migration waves, you need an inventory you trust. A PQC platform should help you answer:

  • Where is cryptography used across our environment?
  • Which algorithms, key sizes, protocols, and libraries are involved?
  • Which systems are internet-facing?
  • Which workflows depend on cryptography for uptime and trust?

This is also where many teams uncover "shadow crypto" — encryption embedded inside libraries, vendor tooling, or legacy components. Discovery is the step that determines whether your migration is controlled or chaotic, and it is where AQtive Guard starts.

Phase 2: Prioritize and create migration waves

Not everything moves first. A practical prioritization model considers:

  • exposure (public-facing vs. internal)
  • business criticality
  • data sensitivity and retention
  • change complexity and ownership
  • vendor and protocol lead times

A simple wave structure that usually works

Wave 1: High-exposure, low-complexity

  • internet-facing services that are straightforward to update
  • systems where upgrading libraries and configurations is relatively low risk

Wave 2: High-exposure, high-complexity

  • public systems with deeper dependencies
  • protocol coordination and vendor upgrades
  • systems that require validation and staged rollout

Wave 3: Internal and legacy modernization

  • less exposed systems
  • long-tail cryptography embedded in legacy apps or devices
  • modernization projects where timelines are longer

The purpose of waves is momentum and risk control. A platform should let you track progress by wave, owner, and system.

Phase 3: Execute remediation with governance

Execution is where many PQC efforts stall. A PQC platform should support:

  • assigning owners per finding and per system
  • remediation guidance that is actionable
  • validation and regression checks
  • reporting for weekly leadership updates
  • audit trails showing what changed and when

A platform also prevents silent failure — where fixes are applied inconsistently or only partially across environments.

Phase 4: Continuous monitoring and crypto agility

This is where PQC becomes sustainable. Cryptography changes over time because libraries get updated, new services ship, dependencies change, and configurations drift. Without continuous monitoring, you will remediate once and then slowly regress.

Crypto agility is the end state:

  • standardized cryptography usage patterns
  • fewer one-off implementations
  • faster upgrades when standards change
  • a repeatable governance model

That is the difference between "we migrated" and "we can adapt."

What to look for in a PQC platform

Use this as a vendor scorecard.

Discovery

  • Can it find cryptographic usage across applications and dependencies?

Prioritization

  • Does it prioritize based on exposure, value, and change difficulty?

Workflow

  • Does it support wave planning, ownership, and tracking?

Validation

  • Can it verify remediation and detect regressions?

Reporting

  • Can it produce leadership-ready updates without manual work?

Monitoring

  • Does it continuously monitor and detect drift over time?

If a platform is weak in discovery and monitoring, it is unlikely to carry you through a multi-quarter migration.

For an execution-ready view of PQC migration programs: