An ERP (Enterprise Resource Planning) system is software that brings a company’s core processes into one system: accounting, purchasing, sales, inventory, manufacturing and HR. Instead of each department working in its own tool or spreadsheet, everyone shares the same database and the same real-time information.
What does an ERP do?
A simple example: a customer places an order. In an ERP, the sales order reserves stock, triggers a purchase or production requirement if materials are missing, creates the delivery, issues the invoice and automatically posts the accounting entry and the receivable. Everything is connected and traceable, with no re-keying.
- Single source of truth: sales, finance and operations see the same numbers.
- Automation: less manual work and fewer errors.
- Control: approvals, authorizations and an audit trail for every transaction.
- Real-time reporting for decision-making.
- Compliance: taxes, e-invoicing and accounting standards.
Core ERP modules
| Area | What it covers | SAP example |
|---|---|---|
| Finance | General ledger, receivables, payables, treasury, assets | FI |
| Controlling | Costs, profitability, budgets | CO |
| Procurement and inventory | Purchase orders, stock, supplier invoices | MM |
| Sales | Sales orders, deliveries, billing | SD |
| Manufacturing | Planning, production orders, bills of materials | PP |
| Warehouse | Advanced warehouse management | EWM |
| Human resources | Employees, payroll, talent | HCM / SuccessFactors |
To see how this data is stored, check our SAP tables list by module.
ERP examples
| ERP | Typical company profile |
|---|---|
| SAP S/4HANA | Large enterprises and multinationals |
| SAP Business One | Small and midsize businesses |
| Oracle Fusion Cloud ERP | Large enterprises |
| Oracle NetSuite | Growing and midsize companies |
| Microsoft Dynamics 365 | Midsize to large companies |
| Odoo | Small businesses; modular, with an open-source edition |
Cloud vs. on-premise ERP
| Cloud (SaaS) | On-premise | |
|---|---|---|
| Infrastructure | Managed by the vendor | Own servers or hosting |
| Pricing | Subscription | Licenses plus maintenance |
| Upgrades | Automatic and frequent | Planned by the company |
| Customization | More limited, via extensions | Maximum, with higher maintenance cost |
How much does an ERP cost?
There is no single price. Total cost includes licenses or subscription (usually per user), implementation (consulting, data migration, training), integrations and support. Implementation often costs as much as or more than the software itself, so always ask for a full quote, not just a per-user price.
Evaluating SAP’s ERP for small businesses? See the license, subscription and implementation breakdown in SAP Business One pricing 2026.
How to choose an ERP: 7 questions
- Which processes must it cover, and which are business-critical?
- Does it offer industry-specific functionality?
- Does it comply with local tax and e-invoicing rules?
- Cloud or on-premise?
- What is the 5-year total cost of ownership, including implementation?
- Are partners and consultants available in your region?
- Will it scale if the company doubles in size?
FAQ
What is the difference between ERP and CRM?
ERP runs internal operations (finance, procurement, inventory, manufacturing). CRM manages customer relationships (opportunities, marketing, service). Many companies use both, integrated.
Is SAP an ERP?
SAP is the company. Its flagship ERP is SAP S/4HANA, and SAP Business One targets small businesses. Learn more in what is SAP.
Is an ERP worth it for a small business?
Yes, once spreadsheets and disconnected tools start causing errors and delays. Cloud ERPs with per-user pricing avoid the need for your own servers.
