02. Scope & Definitions

● Approved v1.4.0 Last Updated: June 15, 2025 Owner: Platform Engineering

📋 Document Purpose

This specification defines the operational boundaries, deliverable commitments, and standardized terminology for the CloudNexus Enterprise Infrastructure Deployment initiative. It serves as the authoritative reference for DevOps, Solution Architecture, and Client Success teams.

Document Overview

The scope framework ensures alignment between CloudNexus platform capabilities and client infrastructure requirements. All deployments follow the standardized architecture blueprint unless explicitly modified via a Change Request (CR).

Definitions provided herein align with CNCF standards, NIST cloud computing guidelines, and CloudNexus internal platform nomenclature. Terminology must be used consistently across tickets, runbooks, and client communications.

Project Scope

The initiative encompasses end-to-end provisioning, configuration, and validation of cloud-native infrastructure components. The scope is bounded by the approved architecture diagram and service level objectives (SLOs).

Delivery follows a phased rollout: Phase 1 (Core Infrastructure), Phase 2 (Network & Security), Phase 3 (Migration & Validation), and Phase 4 (Hypercare).

In-Scope Deliverables

Component	Description	Status
Compute Provisioning	Deployment of high-frequency VPS and bare-metal instances with NVMe tier storage and dedicated vCPU allocation.	In Scope
Kubernetes Control Plane	Fully managed cluster setup with auto-scaling, RBAC policies, network policies, and GitOps integration.	In Scope
Managed Databases	PostgreSQL & Redis instances with automated backups, read replicas, and point-in-time recovery.	In Scope
Global CDN & Edge Security	Edge node configuration, SSL/TLS termination, WAF rules, and DDoS mitigation baseline.	In Scope
Monitoring & Observability	Metrics collection, log aggregation, alert routing, and dashboards integrated with client PagerDuty/Slack.	In Scope
30-Day Hypercare	Prioritized engineering support, performance tuning, and incident response during stabilization window.	In Scope

Out-of-Scope Items

Category	Exclusion Details	Reason / Alternative
Custom Application Development	Code refactoring, API development, or frontend/backend modifications.	Client responsibility; CloudNexus offers partner dev agencies.
Legacy OS Support	Operating systems released prior to 2018 (e.g., CentOS 6, Ubuntu 16.04).	Security compliance & driver compatibility limitations.
On-Premise Hardware Integration	Direct hardware provisioning, rack installation, or physical network cabling.	Requires separate infrastructure services agreement.
Data Cleansing & Migration	ETL processes, schema transformations, or legacy database extraction.	Client engineering must provide clean, export-ready datasets.
Post-Hypercare SLA	Extended support beyond the 30-day stabilization period.	Available via CloudNexus Enterprise Support Add-on.

Key Definitions & Terminology

Standardized glossary for technical alignment across architecture reviews, incident reports, and deployment runbooks.

Anycast Routing

Network architecture where multiple edge nodes share the same IP prefix. Traffic is automatically routed to the topologically closest healthy node, reducing latency and mitigating DDoS impact.

Control Plane

The management layer of a Kubernetes cluster responsible for scheduling workloads, maintaining desired state, and orchestrating node communication. Fully managed by CloudNexus.

Ephemeral Storage

Temporary local disk space attached to a compute instance. Data is purged upon instance termination or migration. Not suitable for persistent workloads.

Multi-AZ Deployment

Distribution of workloads across multiple Availability Zones within a region to ensure fault tolerance and business continuity during zone-level outages.

NVMe Tier

Non-Volatile Memory Express storage utilizing PCIe buses for low-latency, high-throughput I/O. Standard for database and caching workloads.

SLA vs SLO

SLA (Service Level Agreement): Contractual commitment with financial remedies. SLO (Service Level Objective): Internal target metric used to measure performance against the SLA.

vCPU Burst

Transient CPU performance allowance that exceeds baseline allocation for short durations. Governed by credit-based throttling to maintain multi-tenant fairness.

Zero-Trust Network

Security model requiring explicit verification for every user, device, and connection regardless of location. Implemented via mTLS, strict RBAC, and microsegmentation.

Assumptions & Constraints

⚠️ Critical Dependencies

All deliverables assume client-side prerequisites are met prior to kickoff. Failure to satisfy these may trigger schedule adjustments or Change Requests.

Client provides valid SSH keys, domain ownership verification, and required compliance documentation.
Network bandwidth requirements are accurately documented and tested during discovery.
Base operating system images are sourced from the CloudNexus approved repository.
A minimum 4-hour change freeze window is observed during cross-region migration phases.
Data residency and GDPR/CCPA compliance requirements are defined by the client legal team.

Any deviation from these assumptions must be documented via a formal Change Request (CR) and approved by both parties before proceeding.