What is CRM? Definition, types and how it works

CRM (customer relationship management) is a strategy and the software that supports it for storing customer data and managing every interaction with leads and clients in one place. Salesforce leads the market with a 20.7% share of CRM revenue in 2024, according to IDC. Eurostat reports that 61% of large EU enterprises use CRM software, against 22% of small ones.

Updated: 17 October 20263 min read
CRM infographic: five layers of a customer relationship management system
Source: IDC 2025, Eurostat 2024

What is CRM?

CRM is a central database of contacts, companies, deals and interactions that sales, marketing and support teams share. Instead of spreadsheets and inboxes, every call, email, meeting and purchase sits on one customer record. The term covers both the business approach of building long-term customer relationships and the software that makes it possible, such as Salesforce, HubSpot, Microsoft Dynamics 365, Pipedrive or Zoho CRM.

How does a CRM system work?

A CRM system works by collecting data from every touchpoint, organising it into records and pipelines, and triggering actions. A form fill on the website creates a lead, the lead moves through pipeline stages, and each stage can start an email, a task for a salesperson or a notification in Slack. Reports then show win rates, deal value and revenue forecasts.

Types of CRM

CRM software is usually divided into three types by main purpose, and most modern tools combine all three.

Operational CRM

Operational CRM automates sales, marketing and service processes: lead assignment, email sequences, ticket routing.

Analytical CRM

Analytical CRM turns customer data into insights, such as segments, customer lifetime value, churn risk and ARPU.

Collaborative CRM

Collaborative CRM shares customer context between departments and partners, so support sees open deals and sales sees open tickets.

CRM market in numbers

FactValueSource
Salesforce CRM market share, 202420.7%IDC
Salesforce consecutive years as #1 CRM12IDC
Large EU enterprises using CRM, 202361%Eurostat
Small EU enterprises using CRM, 202322%Eurostat

CRM in marketing and SEO

CRM matters to marketers because it connects marketing activity to revenue instead of stopping at clicks and form fills. When I set up SEO tracking for B2B and SaaS clients, I pass the landing page and source of each lead into the CRM, so we see which articles produce deals and not just traffic. That data also sharpens the ideal customer profile and shows which keywords bring buyers. The same closed-loop view feeds conversion optimisation and offline conversion imports in Google Ads.

  • Track the first and last touch source on every contact.
  • Send closed-won deals back to Google Ads and GA4 as offline conversions.
  • Segment newsletters by lifecycle stage and industry.
  • Score leads by fit and behaviour before passing them to sales.

CRM vs ERP

CRM manages the customer-facing side of a business, while ERP manages internal resources such as finance, inventory, production and payroll. Eurostat groups both, together with business intelligence, as e-business software. In practice the two are integrated: the CRM closes the deal, and the ERP invoices and ships it.

AspectCRMERP
Main usersSales, marketing, customer serviceFinance, operations, HR
Core dataContacts, deals, interactionsOrders, stock, invoices, costs
Main goalWin and keep customersRun internal processes efficiently

How to choose a CRM

You choose a CRM by matching it to your sales process, team size and existing tools, not by feature count. For B2B and SaaS companies, which I cover in my B2B SaaS SEO guide, native integration with the website, ad platforms and product analytics usually matters more than advanced modules.

  • Map your pipeline stages before you compare tools.
  • Check integrations with your website forms, email and ad accounts.
  • Confirm data hosting and GDPR terms for EU customers.
  • Test the mobile app with the salespeople who will use it daily.

Pros and cons of CRM

ProsCons
One source of truth for customer dataValue depends on data quality and discipline
Automation of repetitive tasksLicence costs grow with users
Revenue reporting by channelImplementation and training take time
Better handovers between teamsGDPR duties for stored personal data
Pro tip: Add hidden UTM and landing page fields to every website form before you start an SEO project; without them the CRM cannot tell you which content produced revenue.

Frequently asked questions about CRM

What does CRM stand for?

CRM stands for customer relationship management. It refers both to the strategy of managing customer relationships and to the software that stores customer data and interactions.

What is the most popular CRM?

Salesforce is the largest CRM vendor, with a 20.7% market share in 2024 according to IDC. HubSpot, Microsoft Dynamics 365, Zoho and Pipedrive are other widely used systems.

What are the 3 types of CRM?

The three types are operational, analytical and collaborative CRM. Operational CRM automates processes, analytical CRM analyses data and collaborative CRM shares customer context between teams.

Does a small business need a CRM?

A small business benefits from a CRM once leads arrive from several channels or more than one person handles sales. Many tools offer free or low-cost plans for small teams.

Related terms

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