The Exact Architecture Blueprint We Deploy on Every Engagement
Answer three questions and get a 13-section architecture document generated against them: the tenancy decision for your scale, capacity arithmetic with every formula shown, and the control set for your sector mapped to the evidence an auditor asks for.
Your tenancy decision, and what it beat
The isolation model for your scale and sector, the two alternatives it beat with the specific reason each lost, and what changing your mind later would cost.
Capacity arithmetic you can check
Named users, peak concurrency, query rate and connection pool sizing derived from your headcount — each with its formula printed beside it, so you can substitute your own ratios.
Control set mapped to evidence
Every obligation for your sector cited to its clause, matched to the implementation that satisfies it and the artefact an assessor is handed. Plus the phased migration plan and risk register.
Get Your Custom Blueprint
Three questions. Your blueprint is generated from the answers and opens immediately — no waiting, no follow-up required.
The same blueprint we deploy on client engagements
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What is the Systems Architecture Blueprint?
In short: the architecture blueprint ERPStack deploys on every engagement, generated for your profile. A 13-section reference for flexible, multi-tenant SaaS platforms on Next.js and PostgreSQL, built from 3 answers about your sector, scale and role.
What does the blueprint cover?
It covers the multi-tenant decision and the 2 alternatives it beat, capacity arithmetic with each formula shown, the control set for your sector mapped to SOC 2, HIPAA or GDPR evidence, a phased Cloud Migration plan, a risk register and a cost envelope against the SaaS ERP licence line it replaces. 96 editions exist across 6 sectors, 4 scales and 4 roles.
The components it assumes are published in full on the technology stack page. To score the system you already run against it, use the Architecture Audit Grader; to price the move, use the ERP ROI Calculator or read the published pricing.
What is inside the Systems Architecture Blueprint?
Our blueprint provides a production-grade template mapping how to architect enterprise SaaS platforms with strict compliance, low-latency, and zero vendor lock-in.
1. Edge Compute & Routing
Detailed configuration for routing dynamic user sessions at the network edge. Learn how we configure sub-50ms middleware token verification, JWT authentication checks, and geolocation-based database redirection rules to enforce localized data residency compliance.
2. Stateless Application Core
Step-by-step blueprints for structuring React Server Components (RSC) and server actions. Explore our practices for avoiding client-side state latency, implementing absolute imports, and building data validation boundary schemas utilizing TypeScript and Zod.
3. Database Isolation (PostgreSQL)
Reference schemas for schema-level database segregation. Understand how to write PostgreSQL Row-Level Security (RLS) policies based on JWT tenant claims, set up Drizzle ORM relations, and configure connection pooling (PgBouncer) for high-concurrency B2B apps.
4. DevSecOps & Audit Logging
Continuous deployment configurations featuring automated SAST checks via Semgrep, vulnerability dependency auditing, and tamper-evident audit trails. Includes ready-to-use GitHub Actions workflows to guarantee procurement readiness.
Questions about the blueprint
What is inside the 13 sections?
Section 01 restates your answers as an assumption register, and says what changes if 1 is wrong. 02 is the multi-tenant decision every later section inherits: isolated PostgreSQL schema, shared database with Row-Level Security, or 1 instance per client. 03 and 04 are system topology and the lifecycle of 1 authenticated write around the transaction boundary, including JWT validation and RBAC. 05 is capacity arithmetic from your headcount: named users, peak concurrency, query rate, PostgreSQL connection pool size. 06 is the tenant-scoped PostgreSQL data model in your sector's vocabulary: healthcare, finance, retail or manufacturing. 07 maps each SOC 2, HIPAA or GDPR control to its implementation and audit artefact.
What makes this blueprint different from a generic PDF?
Sections 08 to 13 are the ones a template cannot produce: a phased migration plan with 1 exit criterion per phase, a risk register naming each failure mode and its guard, from a Redis cache stampede to a multi-tenant PostgreSQL filtering bug, a cost envelope set against the SaaS ERP licence line it replaces, an explicit list of what we would not build for you, the checks that let you refute any claim above, run against your own AWS or Microsoft Azure account, and a basis of estimate stating every assumption and every exclusion. Every engagement gets the same treatment.
Which technology stack does the blueprint assume?
The stack every ERPStack engagement uses: Next.js and React with TypeScript, PostgreSQL as the system of record with Row-Level Security and Drizzle ORM, Redis for sessions and rate limiting, Zod at the API boundary, deployment to AWS or Microsoft Azure declared in Terraform, and CI running Semgrep SAST, OWASP ZAP, Vitest and Playwright inside GitHub Actions. Where your constraints rule a component out, such as MongoDB Atlas for document data or Kubernetes for long-running jobs, the document says so and names the substitute.
Do I have to give an email to read the blueprint?
Yes on this page: 3 answers and a work email generate your edition, and the document opens in the browser rather than arriving as an attachment. The same profile always produces the same document, so the link is shareable with every colleague on the evaluation; it carries only 3 enum codes, with no email or free text in the URL. A reference edition is also published as an ungated PDF, so you can read the structure of all 13 sections of the Systems Architecture Blueprint before deciding whether to generate the version for your own engagement.
Is the blueprint a proposal or a quote?
Neither. It is the ERP architecture ERPStack would build, written before any commercial conversation, so every assumption is on the table and every figure is checkable. Section 13 lists the exclusions explicitly. A real quote needs your REST or GraphQL API integration list, your PostgreSQL data volumes and your migration scope from SAP, Oracle NetSuite or Odoo, none of which 3 dropdown answers capture, so read the cost envelope in section 10 as an order of magnitude for the engagement rather than a price.
How current is the reference architecture behind it?
It tracks the production ERP stack on this site, the same 24-component set the technology page lists, and every edition is generated from that data rather than maintained as a separate file. When a component changes, React, TypeScript, PostgreSQL, Redis, Terraform or any other, every edition changes with it. That is why the blueprint is generated on request instead of being a static PDF uploaded once and left to rot behind a download button on a resources page.