---
title: "Connect CRM and ERP to language models"
description: "Connecting Salesforce, HubSpot, SAP, Dynamics 365, and Odoo to language models through the Model Context Protocol: four layers, sign-in, and measured timings."
canonical: "https://simosphereai.com/en/guides/crm-erp-integration"
lang: en
---

# Connect CRM and ERP to language models

Connecting Salesforce, HubSpot, SAP, Dynamics 365, and Odoo to language models through the Model Context Protocol: four layers, sign-in, and measured timings.

**Connect CRM and ERP to language models.**

How sales, service, and ERP data is connected to language models through the Model Context Protocol: GDPR-compliant and with an evidence trail. Drawn from the experience of the SIMOSphere AI Lab.

## Connected systems

The Lab has connected seven systems. Each has its own MCP service that translates reads and writes into the protocol and logs every call.

*Connected systems with category, authentication, and MCP service*

|  | Category | Authentication | MCP service | Scope |
| --- | --- | --- | --- | --- |
| Salesforce | CRM | OAuth 2.0 | mcp-salesforce | Sales Cloud, Service Cloud, Marketing Cloud |
| HubSpot | CRM | OAuth 2.0 | mcp-hubspot | Contacts, deals, tickets, Marketing Hub |
| Microsoft Dynamics 365 | CRM and ERP | OAuth 2.0 via Microsoft Entra ID (formerly Azure AD) | mcp-dynamics365 | Sales, Customer Service, Finance and Operations |
| SAP S/4HANA | ERP | OAuth 2.0 or SAML | mcp-sap | OData v2 and v4, BAPI bridge, cloud and self-hosted alike |
| Odoo | ERP | API key | mcp-odoo | Sales, inventory, accounting |
| Microsoft 365 | Collaboration | OAuth 2.0 via Microsoft Entra ID (formerly Azure AD) | mcp-ms365 | SharePoint, OneDrive, Outlook, Teams |
| Nextcloud | Documents | App password | mcp-nextcloud | Files, Talk, Deck, hosted entirely in the EU |

## Four layers, one architecture

No point-to-point tangle. Every layer has exactly one job, and every layer can be replaced on its own.

1. **Data sources**: CRM, ERP, Microsoft 365, SharePoint and Nextcloud stay where they are. Nothing is copied, nothing migrates into a second store.
2. **MCP services**: One service per system. It translates reads and writes into the standardized protocol and writes a log entry for every call.
3. **Orchestration**: It routes a request to the right model and to the right connector. The choice is Apertus, Mistral, or a provider using your own key. Permissions and data classification are enforced here.
4. **Workspace and roles**: Business users work in their familiar interface or with AI roles that have a clear scope. Nobody who would rather not know about MCP has to.

## Time to value

Figures from completed client projects between the fourth quarter of 2025 and the second quarter of 2026. Elaborate custom fields or bridges to legacy systems take longer.

*Measured setup effort per system*

|  | Duration | What decides it |
| --- | --- | --- |
| HubSpot and Odoo | 2 to 4 hours | Authentication and a sandbox are ready within hours |
| Salesforce | Half a day to a day | Provided profiles and permissions are kept clean |
| Dynamics 365 | Half a day to a day | Microsoft Entra ID and the tenant setup |
| SAP S/4HANA | 2 to 5 days | The OData service and the permission model |
| Microsoft 365 and SharePoint | Half a day | The Graph API and the sites scope |
| Nextcloud | 1 to 2 hours | An app password is enough |

## From the Lab to consulting.

SIMO does not judge options on vendor claims alone. Assumptions that can be tested technically are examined in the SIMOSphere AI Lab. SIMO GmbH works with your executive team to assess whether an approach that proves viable in the Lab makes sense for your company, and supports the implementation: independent of vendors, with a fixed scope and a decision after every phase.

- [Start the check](https://simo-online.com/en/self-check)
- [Book an initial call](https://request.simo-online.com/en?intent=erstgespraech)
- [All services on simo-online.com](https://simo-online.com/en/services)

Decision Readiness Check: 12 questions, about 3 minutes, instant result. Initial call: 45 minutes, free of charge, by video. Engagements begin with the BISA baseline assessment or the BEIA enterprise assessment. All on simo-online.com.

Rendered version: https://simosphereai.com/en/guides/crm-erp-integration