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**Admin Backend Blueprint**

Here is a concise developer blueprint for the **admin backend** that
powers the PSA + automation platform (tenants, users, billing,
automations, observability,
governance).[^[\[1\]]{.underline}^](#imii88ue8hpj)[^[\[2\]]{.underline}^](#t8pijympu3i3)

**1. Admin backend goals**

-   Central control plane for **multi-tenant operations**: tenants,
    > environments, plans, and
    > usage.[^[\[1\]]{.underline}^](#imii88ue8hpj)

-   Operational console for **automations**: deploy, monitor, throttle,
    > and debug bots/agents across
    > clients.[^[\[2\]]{.underline}^](#t8pijympu3i3)

-   Governance, security, and compliance: audit logs, roles, policies,
    > and
    > approvals.[^[\[2\]]{.underline}^](#t8pijympu3i3)[^[\[1\]]{.underline}^](#imii88ue8hpj)

**2. High-level architecture**

-   **Admin API (BFF for admin UI)**

    -   Exposed only to internal/admin users; sits behind VPN or SSO
        > (e.g., Okta).

    -   Aggregates data from domain microservices: Identity, Tenant,
        > Billing, Automation, Observability,
        > Compliance.[^[\[1\]]{.underline}^](#imii88ue8hpj)

-   **Domain services (selected)**

    -   Identity & Access Service

    -   Tenant & Plan Service

    -   Billing & Usage Service

    -   Automation Orchestration Service (bots, agents)

    -   Observability Service (metrics, logs, traces)

    -   Compliance & Audit Service

-   **Admin UI**

    -   Separate SPA (React/Next.js) at /admin consuming Admin API.

**3. Core admin domains & entities**

1.  **Tenants and environments**[^[\[1\]]{.underline}^](#imii88ue8hpj)

-   Entities: Tenant, Environment (prod/sandbox), Plan, FeatureFlag.

-   Admin operations:

    -   Create/update/suspend tenant.

    -   Assign plan and feature set.

    -   Configure regions (US/EU), data residency, retention.

2.  **Users & roles**[^[\[2\]]{.underline}^](#t8pijympu3i3)

-   Entities: User, UserRole, OrgRoleMapping, AdminUser.

-   Admin operations:

    -   Impersonate tenant user (for support) with audit trails.

    -   Force logout, lock/unlock, invite/resend.

    -   Assign tenant-level and global roles (e.g., Support, CSM).

3.  **Billing & usage**[^[\[1\]]{.underline}^](#imii88ue8hpj)

-   Entities: Subscription, UsageRecord (seats, API calls, automations),
    > Invoice, Payment.

-   Admin operations:

    -   View current and historical usage per tenant.

    -   Override plan limits, apply discounts, credit notes.

    -   Manually trigger invoice generation; adjust billing dates.

4.  **Automations & agents**[^[\[2\]]{.underline}^](#t8pijympu3i3)

-   Entities: AutomationDefinition, BotInstance, AgentInstance, Run,
    > Schedule.

-   Admin operations:

    -   Register/edit automations and versions.

    -   Deploy/rollback versions per tenant.

    -   Pause/resume bots or entire automation groups.

    -   Configure schedules and concurrency limits.

5.  **Observability**[^[\[2\]]{.underline}^](#t8pijympu3i3)

-   Entities: MetricSeries, LogEvent, Incident, SLO.

-   Admin operations:

    -   View platform-wide health dashboards (latency, error rates,
        > queue depth).

    -   Drill into tenant automation failures.

    -   Manage incident statuses and on-call routing metadata.

6.  **Compliance &
    > audit**[^[\[1\]]{.underline}^](#imii88ue8hpj)[^[\[2\]]{.underline}^](#t8pijympu3i3)

-   Entities: AuditEvent, Policy, DataExport, DataDeletionRequest.

-   Admin operations:

    -   Search audit events (who did what, where).

    -   Configure policies per region/tenant (retention, PII masking).

    -   Approve/execute data exports and deletion requests (GDPR/HIPAA).

**4. Admin API design (selected endpoints)**

Prefix: /admin/api (secured behind admin SSO).

**Tenants & plans**

-   GET /tenants?status=&region=&q=

    -   List tenants with filters.

-   GET /tenants/:tenantId

    -   Full tenant profile (plan, usage, status, contacts).

-   POST /tenants

    -   Create tenant; assign default plan and environment.

-   PATCH /tenants/:tenantId

    -   Update plan, status (active, suspended, trial), region, flags.

-   POST /tenants/:tenantId/feature-flags

    -   Enable/disable beta features for that tenant.

**Users & impersonation**

-   GET /tenants/:tenantId/users

-   PATCH /users/:userId

    -   Lock/unlock, roles, metadata.

-   POST /users/:userId/impersonate

    -   Returns a short-lived token for admin to access client UI as
        > that user; logs an ImpersonationStarted event.

**Billing & usage**

-   GET /tenants/:tenantId/usage?from=&to=

    -   Seats, API calls, automation runs, storage.

-   GET /tenants/:tenantId/subscription

-   PATCH /tenants/:tenantId/subscription

    -   Plan, renewal date, discount, trial extension.

-   POST /tenants/:tenantId/invoices/generate

    -   Force invoice generation for period.

**Automations**

-   GET /tenants/:tenantId/automations

    -   List definitions + current version + status.

-   GET /automations/:automationId

-   POST /automations

    -   Register new automation (name, type, inputs, microservice
        > binding, code ref).

-   POST /automations/:automationId/deploy

    -   Deploy new version to one or more tenants.

-   POST /bots/:botId/pause / POST /bots/:botId/resume

-   GET /tenants/:tenantId/runs?status=&from=&to=

    -   List recent executions with success/error.

**Observability & incidents**

-   GET /platform/health

    -   Aggregated metrics for key services.

-   GET /tenants/:tenantId/errors?from=&to=

    -   Error logs filtered by tenant.

-   GET /incidents?status=&severity=

-   POST /incidents / PATCH /incidents/:id

**Compliance & audit**

-   GET /audit?tenantId=&actor=&from=&to=

-   GET /tenants/:tenantId/policies

-   PATCH /tenants/:tenantId/policies

    -   Retention, allowed regions, PII masking, export rules.

-   POST /tenants/:tenantId/data-export

-   POST /tenants/:tenantId/data-deletion

**5. Admin UI modules & screens**

Admin UI is just for dev/ops/CSM teams, not
customers.[^[\[1\]]{.underline}^](#imii88ue8hpj)

**A. Tenants module**

-   **Tenants list view**

    -   Columns: Name, Status, Plan, Region, MRR, Last Activity,
        > Created.

    -   Filters: status, region, plan; free-text search (name, domain).

-   **Tenant detail view**

    -   Tabs: Overview / Users / Usage & Billing / Automations / Audit
        > Log / Settings.

    -   Overview: key stats, top automations, support notes.

    -   Settings: feature flags, plan overrides, region, deletion/export
        > actions.

**B. Automations module**

-   **Automation catalog**

    -   All registered automations with tags: vertical, complexity, type
        > (bot/agent/workflow).

    -   Actions: create, deprecate, version, deploy.

-   **Automation detail**

    -   Definition (schema, parameters, target microservice).

    -   Version history + rollout status per tenant.

    -   Recent runs: success %, avg duration, error distribution.

**C. Ops / Observability module**

-   **Platform health dashboard**

    -   Service status grid (green/yellow/red).

    -   Latency/error-rate charts per service.

    -   Queue depth, throughput of automation runs.

-   **Error & incident explorer**

    -   Filter by tenant, service, automation, severity, time.

    -   Drill-down into stack traces/logs; link to JIRA/Tickets.

**D. Billing & finance module**

-   **Usage overview**

    -   Heatmap: tenants vs. usage metrics.

    -   Outliers: heavy usage vs. billed plan.

-   **Subscription manager**

    -   Plan changes, discount codes, trial controls.

    -   Manual invoice generation, adjustments.

**E. Compliance & audit module**

-   **Policy manager**

    -   Default global policies; overrides per region/tenant.

-   **Audit search**

    -   Query by actor, action, resource, tenant; export to CSV for
        > auditors.

**6. RBAC model for admin backend**

-   Global **admin roles**:

    -   SUPER\_ADMIN: full control.

    -   SUPPORT: view-only + impersonation, no billing/policy changes.

    -   CSM: can edit tenant configs, plans, flags, but no low-level
        > infra.

    -   OPS: can manage automations, incidents, infra metrics, but not
        > billing.

    -   COMPLIANCE: full access to audit/compliance, no automations.

-   Policy engine (e.g., OPA / custom):

    -   Evaluate (role, action, resource, tenant) before every Admin API
        > call.

**7. Storage & data modeling notes**

-   Use **separate schemas** or DBs per bounded context (Tenant,
    > Billing, Automation, Audit) with read models for Admin
    > UI.[^[\[2\]]{.underline}^](#t8pijympu3i3)[^[\[1\]]{.underline}^](#imii88ue8hpj)

-   Create **aggregated "dashboard" views** for admin operations
    > (materialized views or denormalized tables for fast queries).

-   Audit events stored append-only, never updated; only redacted as per
    > policy.

**8. Tech stack**

-   Backend: Node.js (NestJS/Express) or Go for Admin API; gRPC/REST to
    > domain
    > microservices.[^[\[3\]]{.underline}^](#7qyxm46flh7l)[^[\[4\]]{.underline}^](#3dzr6cmayxn6)

-   Auth: OpenID Connect or SAML SSO (Okta/Azure AD) + short-lived JWT
    > for admin UI.

-   Storage: Postgres for config & billing; Elasticsearch/OpenSearch for
    > logs; Prometheus for metrics.

-   Observability: OpenTelemetry traces, Grafana dashboards, alerting
    > via PagerDuty/Slack.

**9. Implementation phases (admin backend only)**

-   **Phase 1 (4--6 weeks)**

    -   Admin auth + RBAC.

    -   Tenant & user modules (CRUD, impersonation, feature flags).

-   **Phase 2 (6--8 weeks)**

    -   Automation & observability modules (catalog, runs, health).

-   **Phase 3 (6--8 weeks)**

    -   Billing & usage, compliance & audit modules; refine policies and
        > add export/deletion workflows.

If you want, next step can be designing concrete OpenAPI schemas for the
/admin/api/tenants and /admin/api/automations endpoints or a simple ERD
for the tenant/billing/automation tables.

⁂

1.  [[lets-draft-a-new-business-plan-dLDXNsMlRNyfoAVGcrHupQ.md]{.underline}](http://lets-draft-a-new-business-plan-dldxnsmlrnyfoavgcrhupq.md)

2.  lets-explore-developing-a-robo-lvagYbMLT92Anv1Q\_Q5Omw.md

3.  [[https://frontegg.com/blog/best-practices-for-saas-development-using-microservices]{.underline}](https://frontegg.com/blog/best-practices-for-saas-development-using-microservices)

4.  [[https://www.automationanywhere.com/company/blog/product-insights/rpa-platform-cloud-architecture-5-must-haves-and-3-to-avoid]{.underline}](https://www.automationanywhere.com/company/blog/product-insights/rpa-platform-cloud-architecture-5-must-haves-and-3-to-avoid)

5.  Business Plan for AIITech.pdf
