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    CRM SystemsIntermediate

    CRM System

    A custom-built CRM system for managing contacts, deals, pipelines, tasks, and team collaboration. Includes email integration, automated follow-up sequences, reporting dashboards, and webhook-based integrations with existing tools.

    10 – 5,000users supported
    $80 – $600/month infrastructure

    Architecture Diagram

    Interactive — hover over any node to see its role and description.

    Sales TeamReact DashboardSPALaravel APIRESTMySQLRelational DBRedis CacheEmail WorkerHorizon + SendGridReports EngineScheduled JobsWebhook HubZapier / CustomUserFrontendAPIDatabaseCacheQueueBackendExternal

    Use Cases

    Sales pipeline management for B2B teams
    Customer relationship tracking for agencies
    Lead management for real estate businesses
    Client onboarding and project tracking
    Sales performance reporting and forecasting

    Technology Stack

    frontend

    ReactTypeScriptRechartsTailwind CSS

    backend

    Laravel 11PHP 8.3Laravel Horizon

    database

    MySQL 8Redis

    infrastructure

    DockerAWS EC2AWS RDSNginx

    integrations

    SendGridGmail APIZapier Webhooks

    Scalability Roadmap

    Stage 10 – 50 users· Single VPS + Docker

    Docker Compose on a single VPS. MySQL and Redis on the same host. Enough for small sales teams.

    Stage 250 – 500 users· EC2 + Managed RDS

    Separate app and database servers. Managed RDS for backups. Laravel Horizon for queue monitoring.

    Stage 3500 – 5K users· Load balanced EC2 + Redis Cluster

    Multiple app servers behind ALB. Dedicated Redis cluster. Read replicas for reporting queries.

    Stage 45K+ users· ECS + Aurora + Data Warehouse

    Containerised deployment. Aurora MySQL. Separate data warehouse (Redshift) for heavy analytics.

    Cost Breakdown

    Development Cost

    $8,000 – $18,000 (6–10 weeks)

    Infrastructure Cost

    $80 – $600/month (scales with team size and email volume)

    Maintenance Cost

    $800 – $2,500/month for integrations, new features, and support

    Security Considerations

    RBAC with admin, manager, and rep roles controlling data visibility
    All API endpoints protected by Laravel Sanctum tokens
    Email integration uses OAuth2 — no passwords stored
    Activity log of all data changes with user attribution
    GDPR-compliant contact deletion and data export

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