ERP and CRM in Comparison
The ERP and CRM software market is hard to take in at a glance: countless vendors of ERP and CRM systems compete for attention. A structured comparison pays off not just financially, but because not every system fits every company. Vendors specialise by industry, by company size (Mid-Market vs enterprise), by deployment model (cloud vs on-premises) and by depth of services (training, implementation, ongoing support).
Before comparing vendors, the more fundamental question often comes first: do we need an ERP, a CRM, or both? This guide draws the line between the two software categories, explains where they overlap and gives a practical decision framework for German Mid-Market companies.
The essential differences
ERP (Enterprise Resource Planning) is the backbone system for all operational business processes — purchasing, production, inventory, finance, HR, sometimes sales. It manages internal resource flows and the financial reality of the business: every posting that hits the general ledger, every goods movement, every purchase commitment.
CRM (Customer Relationship Management) is the system of record for everything that happens with the customer — sales pipeline, opportunity management, marketing campaigns, customer-service tickets, conversation history. CRM looks outward to revenue generation; ERP looks inward to resource management.
The overlap zone is sales-order processing. Both systems can take a customer order, but they do it differently: CRM treats the order as the end of a pipeline, ERP treats it as the start of fulfilment. The hand-off between the two systems is one of the most-asked integration questions in mid-market software architecture.
When CRM alone, when ERP alone?
CRM only works well for companies whose value creation is the relationship itself: agencies, consultancies, B2B services, SaaS vendors selling subscriptions with light fulfilment. These businesses live and die by pipeline visibility, lead conversion and retention — the bookkeeping side is typically outsourced to an accountant or run on a lightweight finance tool (DATEV Unternehmen Online, Xero, lexoffice).
ERP only works for production-heavy businesses with simple, repeating customer bases — classical Mid-Market manufacturers with 30–100 long-standing B2B customers. Sales is mostly account management rather than pipeline-building, so a CRM in the dedicated sense adds little above what the ERP's contact module already does.
The need for both emerges when (a) the sales motion is complex enough to need a real pipeline (multi-stage B2B, longer sales cycles, multiple roles per deal), and (b) fulfilment is complex enough to need a real ERP (production planning, multi-warehouse inventory, multi-entity accounting).
Integration: best-of-breed vs. integrated suite
Two architectural options exist for companies needing both. Integrated suite (Microsoft Dynamics 365, SAP S/4HANA + Sales Cloud, Odoo, Oracle NetSuite, SAP Business One): one vendor, one data model, no integration project. The trade-off is functional depth — the bundled CRM module is usually less capable than a dedicated CRM-first product like Salesforce or HubSpot.
Best-of-breed (Salesforce + SAP, HubSpot + Microsoft Business Central, Pipedrive + Sage 100): best-in-class for each function, but a real integration project to keep customer, product and order data in sync. Expect 50–200k EUR one-time integration effort plus ongoing maintenance. The result is more capable but more expensive to operate.
For German Mid-Market companies under 300 employees: the integrated-suite path is the safer default. For companies with strong sales-led growth or complex B2B sales motions, best-of-breed earns its keep.
Selection criteria for both
Independent of the ERP-or-CRM decision, three criteria sit above all others when comparing vendors in either category:
- Industry fit: a vendor with five reference customers in your industry sector beats a generalist with 500 references in unrelated industries. The Mid-Market-specific question: how many of those references are in DACH, with DACH-typical processes?
- Localisation depth: for any system that touches money — ERP definitely, CRM partially — GoBD compliance, DATEV interface, German VAT handling and e-invoicing readiness (XRechnung, ZUGFeRD) are non-negotiable.
- Total cost over five years: the licence fee is the smallest part. Implementation (often 1.5–3x licence cost), training, customisation and ongoing maintenance dominate the total. A cheap-licence vendor with an expensive partner network can cost more in five years than an expensive-licence vendor with an efficient one.
Related Topics
Frequently Asked Questions
Can we start with CRM and add ERP later?
Yes, this is the more common sequence for fast-growing companies. CRM is easier to deploy (3–6 months for the first roll-out vs 12–24 months for ERP), delivers visible value sooner (pipeline transparency) and creates fewer organisational tensions. Adding ERP later means a one-time customer-master and product-master sync project, manageable if planned for in the CRM data model.
Can we start with ERP and add CRM later?
Also possible, more common for production-heavy companies. The risk: once ERP is live, the sales team often resists adopting a separate CRM because they have started using the ERP's contact module as a CRM stand-in. Plan the CRM roll-out early enough that the change is presented as a deliberate next step, not a course correction.
Is an integrated suite always cheaper than best-of-breed?
In licence cost over five years: usually yes. In total cost of ownership: not always. Integrated suites cost less to integrate but more to customise around the parts that don't fit. Best-of-breed costs more to integrate but allows each function to be best-in-class without compromise. The tipping point depends on how distinctive your sales motion is relative to the suite's standard CRM module.