Build a scalable B2B platform for multiple client organizations, teams, or business units with secure data isolation, granular permissions, advanced backend workflows, and custom API integrations.

This engagement is designed for established B2B companies, marketplaces, software platforms, and client portals that have outgrown basic application architecture.

Unlike a standard SaaS MVP, these systems often require multiple organization types, carefully controlled access levels, complex workflows, background processing, integration with existing business systems, and reliable billing or usage tracking.

EVC Studios will architect and develop the platform around your operational requirements, security boundaries, and long-term product roadmap.

Projects begin at $25,000, with final pricing determined by scope, integrations, data complexity, user roles, and infrastructure requirements.

Your platform will be designed to maintain clear boundaries between customer organizations and their data.

Organization-level tenant models

Tenant-aware database relationships

Workspace or account hierarchies

Tenant-scoped queries

Organization-specific configuration

Data-access validation

Administrative oversight controls

Cross-tenant protection strategies

A custom permission system can be developed for the platform’s specific organizational structure.

Platform administrators

Organization owners

Organization administrators

Managers

Team members

Contractors

Customers

Read-only users

Custom operational roles

Permissions can be assigned based on role, organization, feature, record ownership, account status, or other business rules.

The platform can support advanced backend processes and communication with external systems.

Custom REST or GraphQL APIs

Third-party API integrations

Webhook processing

Background job queues

Scheduled tasks

Data synchronization

Import and export workflows

Document generation

Notification systems

Approval workflows

Retry and failure-handling logic

Multi-tier subscriptions

Organization-level billing

Seat-based billing

Usage-based metering

Feature entitlements

Trial management

Upgrade and downgrade handling

Billing webhooks

Invoice and payment-status tracking

Administrative billing controls

The application will be prepared for reliable production operation.

Development, staging, and production environments

Isolated environment secrets

Continuous deployment configuration

Database migration workflow

Dependency verification

Error monitoring

Audit logging

Operational event tracking

Backup recommendations

Security review

Deployment documentation

We define user types, organization structures, workflows, integrations, data boundaries, and operational requirements.

The application framework, authentication, tenant model, database architecture, permissions, and deployment environments are established.

The primary dashboards, portals, operational workflows, APIs, and administrative capabilities are developed.

Third-party systems, background processing, billing logic, usage tracking, and automation workflows are implemented.

The platform undergoes workflow testing, permission verification, dependency review, production deployment, documentation, and launch support.

The starting price applies to focused multi-tenant platform engagements. Final pricing will depend on the number of user roles, organization types, workflows, integrations, data-migration requirements, billing complexity, and administrative features.

Projects involving formal regulatory certification, medical data, financial custody, unusually high transaction volumes, native mobile applications, extensive legacy migration, or complex marketplace payouts may require specialized scope and pricing.

All API keys, third-party tokens, and deployment secrets are managed under strict, isolated human control and never exposed to public repositories or external cloud AI retention paths. Every line of production code undergoes manual human review and dependency verification prior to deployment.