Recommendations for DPI Implementations by System Maturity

Rather than a one-size-fits-all approach, cloud-agnostic recommendations should be calibrated to a system's maturity and criticality.

Tier 1 — Foundation (All DPI Deployments)

Every DPI implementation, regardless of scale, should adopt these practices from the outset:

• Containerize applications using OCI-standard container images and orchestrate through Kubernetes.

• Codify infrastructure with provider-agnostic tools such as Terraform or Pulumi, stored in version control.

• Default to open standards — prefer open-source databases (PostgreSQL, MySQL), S3-compatible object storage, and standard authentication protocols (OpenID Connect, OAuth 2.0) over proprietary alternatives.

• Document all provider-specific dependencies and the justification for each.

Outcomes optimized: reduced time-to-build, baseline security, avoidance of early lock-in.

Tier 2 — Growth (Systems Handling Significant User Populations)

As systems grow to serve large user bases, additional measures become cost-effective:

• Design for data portability — implement comprehensive data export in standardized formats (JSON, CSV, W3C Verifiable Credentials) from the outset.

• Invest in abstraction layers judiciously — create thin abstractions for components most likely to require portability (storage, identity, messaging), but avoid over-engineering.

• Test portability regularly — periodically deploy to alternative infrastructure to validate assumptions and detect drift.

Outcomes optimized: data portability, service quality, migration flexibility.

Tier 3 — Systemically Critical (Infrastructure Essential to the Economy)

When a DPI system becomes systemically important — national identity, core payments, civil registry — the full cloud-agnostic posture is warranted:

• Multi-provider deployment — active-active or primary-secondary configurations across at least two independent providers.

• Contractual exit strategies — service level agreements must include data export requirements, exit assistance provisions, and minimum notice periods.

• Formal architectural review — regular review of all provider-specific dependencies with explicit portability trade-off decisions.

• Minimum downtime targets — design for near-zero downtime during provider transitions.

Outcomes optimized: resilience, zero downtime, full sovereignty, vendor negotiation leverage.