Customer Relationship Management (CRM)
Term 2 of 68 in the ERPStack technical glossary
What is Customer Relationship Management (CRM)?
Customer Relationship Management (CRM) is a software platform that centralizes, manages, and analyzes all interactions and data associated with current, past, and potential customers across sales, marketing, and support channels to optimize client retention and drive revenue growth.
Customer Relationship Management (CRM) at a glance
- Record spine
- 4 linked entities: account, contact, opportunity and activity, keyed to 1 customer identity
- Reference stack
- PostgreSQL 18 with Drizzle ORM 0.45, Next.js 16 server actions, Zod 4 input validation
- Sync pattern
- Idempotent webhooks returning 200 on replay; 409 on conflicting versions rather than silent overwrite
- Access model
- Role-Based Access Control plus Row-Level Security so 1 query cannot leak another team's pipeline
- Built with
- Next.js 16 server actions, Drizzle ORM 0.45 on PostgreSQL 18, Zod 4 validation, Sentry for errors
- Numbers that matter
- 1 customer identity across CRM and ERP; GDPR allows 1 month plus 2 to answer a subject request; 200 on replay, 409 on a version conflict
- Packaged alternatives
- Salesforce, HubSpot, Microsoft Dynamics 365, Zoho Creator, Monday.com
- Commonly paired with
- The ERP ledger, SSO, RBAC and a GDPR subject-request path
How Customer Relationship Management (CRM) works in production
The ERPStack approach to Customer Relationship Management (CRM)
We develop custom CRM solutions that integrate directly into your database schema, avoiding the limitations of generic SaaS CRMs. This provides secure, real-time sync with your ERP, custom access rules (RBAC), and full data ownership.
Frequently asked questions about Customer Relationship Management (CRM)
What does a CRM store that an ERP does not?
Customer Relationship Management owns the pre-transaction record: leads, conversations, proposals and pipeline stages that exist before anything is invoiced. The ERP owns what happens after commitment. Keeping Relationship Management data in its own bounded context but on the same PostgreSQL cluster gives you 1 customer identity across both, without forcing the sales team to work inside an accounting screen.
Why integrate a CRM with the ERP instead of exporting spreadsheets?
A CSV export is a snapshot that is wrong the moment it is saved. Direct Relationship Management integration means a closed opportunity creates the order, reserves stock and opens the invoice in 1 transaction. It also removes the second data-entry pass, which is where most reconciliation errors originate. Where the systems must stay separate, signed webhooks with idempotency keys keep them consistent without a nightly batch job.
When does a custom CRM beat Salesforce or HubSpot?
Generic platforms are excellent at generic pipelines. Custom Relationship Management earns its keep when your sales motion depends on data the packaged object model cannot hold, when per-seat pricing outruns the value of the seats, or when the CRM must sit inside the same compliance boundary as production data. If you are already paying for 3 managed packages to reshape the object model, the platform is no longer doing the work for you.
How is CRM data kept safe under GDPR?
Relationship Management systems hold personal data by definition, so deletion and export have to be first-class operations rather than support tickets. ERPStack builds a Data Subject Access Request path that resolves 1 person across every table, plus field-level encryption for sensitive attributes. GDPR gives controllers 1 month to answer a subject request, extendable by 2 further months, and a schema you can query beats a manual search every time.