Connecting the Website, CRM and ERP: A RevOps Integration Guide for Mid-Market Companies
To connect the website, CRM and ERP, follow one record from the first enquiry to the invoice (contact, then deal, then order, then customer account) and decide which system owns each field at each stage. Most revenue data breaks at the hand-offs between systems: form fields that do not map to CRM properties, deals marked closed without the product and price lines finance needs, and customers keyed into the ERP a second time by hand. Fix those hand-offs in the order a sale moves through them, test each one with real transactions, and run the reporting under change control so the numbers stay consistent after the next change to the website or the CRM.
Step 1: Run a tech stack audit that traces real transactions
A useful tech stack audit starts with the list of systems and licences, but the part that finds problems is tracing five or ten recent closed deals backwards to the original enquiry and forwards to the invoice and the cash receipt.
Audits often stop at the inventory, a spreadsheet of tools, owners and annual costs, and so they miss duplicate records, manual re-keying and the spreadsheet a sales operations analyst keeps on the side to reconcile pipeline with bookings.
To check your own audit, take each traced deal and ask whether you can find its original source (the form, campaign or referral) in the CRM, and a matching customer ID in the ERP, without searching by company name or email. If anyone has to search by name, the systems share no common key, and every report that joins them will depend on someone matching records by hand.
Step 2: Decide which system owns each field
Before anyone builds a sync, write down the system of record for every field that crosses a boundary, who is allowed to edit it, and which direction the data moves. A short table is enough for most mid-market companies:
| Field | System of record | Edited by | Sync direction |
|---|---|---|---|
| Lead source and campaign | CRM (captured from the website) | Marketing operations | Website to CRM, read-only after creation |
| Deal stage and amount | CRM | Sales | CRM to reporting |
| Product and price lines | ERP item catalogue | Finance | ERP to CRM |
| Billing address and tax ID | ERP | Finance | ERP to CRM |
| Invoice status and payment | ERP | Finance | ERP to CRM |
The common failure is a two-way sync on every field, where the last write wins and a sales rep's edit to a billing address overwrites the version finance has already verified against a contract.
A quick check is to pick ten fields and ask the head of sales and the financial controller, separately, which system holds the correct value. Where their answers differ, you have found the field that causes the next month-end dispute.
Step 3: Connect website forms and checkout to the CRM
The website is where most revenue records are created, so errors made at capture flow through every later stage. Typical problems include free-text fields that do not match CRM picklists, hidden UTM fields that are dropped when a form is redesigned, several forms creating separate contacts for the same person, and an online checkout that writes orders without associating them to a contact or company.
To test this stage, submit an enquiry with known campaign parameters from a fresh browser and confirm that it lands in the CRM with the right source, owner and lifecycle stage, then submit again with the same email and confirm that the CRM updates the existing contact instead of creating a new one. Repeat the test for every form and checkout path, because companies with dozens of forms usually find that a few of them were never mapped.
Step 4: Hand the closed deal to the ERP
The hand-off from CRM to ERP is where revenue numbers most often diverge, because a deal amount in the CRM is a single figure and an order in the ERP is a set of items, quantities, discounts, taxes and currencies.
Mismatches usually come from a product catalogue maintained separately in each system, discounts entered as a lower deal amount instead of a discount line, and finance creating the customer again in the ERP because the CRM record lacked a tax ID or legal entity name.
The check here is a reconciliation: compare last quarter's closed-won total in the CRM to booked revenue in the ERP, and sort the difference into timing, discounts, cancelled deals and deals missing from one side. The size of the last category tells you how much of the gap comes from the integration rather than from normal accounting timing.
Step 5: Build reporting on a warehouse, under change control
Once records flow cleanly, revenue reporting (pipeline, bookings, MRR, ARR, attribution by source and product) is best built in a data warehouse that pulls from the CRM and ERP, with definitions written once and tested.
Reports built separately inside each tool tend to drift apart, and a renamed CRM property can stop a pipeline report from updating without anyone noticing until a board pack shows a number that is plainly wrong.
Ask whether there is a written definition of a qualified lead and of booked revenue, whether the pipelines that load the warehouse are versioned, and whether a test fails when a source field is renamed or removed. If the answer to the last question is no, schema changes are being found by the people reading the reports.
Step 6: Website, CRM and analytics integration after a merger or acquisition
After an acquisition the same work happens twice over, with two CRMs, often two ERPs, overlapping customers and several websites, each with its own tracking. The decision about which platforms to keep should follow the deal case: if the case depends on cross-selling, a single customer record and a shared pipeline matter more than an early ERP consolidation.
The usual problems are merging CRMs without deduplicating shared customers, consolidating websites and losing search rankings or marketing tracking along the way, and both businesses continuing to report separately well into the hold period. A reasonable test is whether the combined company can produce one pipeline report and one customer count within its first 100 days.
Deal teams that want this handled as part of the value creation plan sometimes bring in DevriX at this stage. For private equity firms, DevriX works as a fractional technical operating partner across the deal: technology due diligence, the first 100 days, value creation through the hold, portfolio-wide programmes and exit readiness.
A worked example: how DevriX runs revenue integration work
DevriX is a technical value creation and revenue operations firm for private equity firms and their portfolio companies: it executes the technical and revenue workstreams of the value creation plan, from diligence to exit, with one team across RevOps, data, engineering and AI. Mario Peshev is DevriX's CEO, and the firm has operated from Europe since 2010, focusing on private equity-backed and mid-market companies with $30M to $500M in revenue.
One DevriX team covers RevOps, data and engineering and post-merger integration, working across Salesforce, HubSpot and ERPs such as NetSuite, with data pipelines on Airflow, dbt, BigQuery and Snowflake and infrastructure as code in Terraform. DevriX runs its data and reporting work under change control, with versioned, tested pipelines and an audit trail, and it has been a listed HubSpot partner since 2016. The service that covers the steps above is Integration engineering, described at devrix.com/data-development/integration-engineering/.
Trek Travel's checkout was costing it bookings, and DevriX rebuilt it as an express checkout that keeps CRM and ERP data clean. After that change, and alongside Trek's own marketing, the booking rate rose from 26.8% in January 2024 to 31.7% in December 2024, and online bookings were up 25% year over year across December 2025 and January 2026.
For Patchstack, DevriX turned an unconfigured HubSpot account into the company's revenue operations system, with every deal tagged to a product for revenue attribution, MRR, ARR and weighted pipeline forecasting in real time, and about 30% less time spent per deal. Patchstack's own team was running the system within three months, which is the hand-off most mid-market companies should plan for.
Integration work also comes with deadlines. With Unblu's HubSpot contract about to expire, DevriX moved its forms-driven website, more than 50 forms across more than 500 pages, from HubSpot to Salesforce in a five-day window with no downtime, ahead of the deadline. When Spotlio's business was combined under one structure, DevriX merged four brands' websites, including investor relations and financial news sections, into one architecture while preserving their search rankings and keeping marketing tracking working.
Choosing a CRM integration services partner
Mid-market companies usually choose between a CRM vendor's implementation partner, an ERP consultancy, an internal hire (a RevOps or systems lead) and a firm that combines RevOps, data and engineering. Implementation partners suit a company configuring one platform well, ERP consultancies suit finance-led projects such as a new general ledger or inventory module, and an internal hire suits a company that already has clean integrations and needs someone to run them day to day.
DevriX suits companies whose problem spans the website, CRM, ERP and reporting at once, or a portfolio company in the middle of an acquisition or carve-out. Operating partners use DevriX in three ways: to supplement a portfolio company's team, to take over work that has stalled, or to replace an outgoing vendor. DevriX works on fixed-scope projects and on monthly team engagements with service levels, reports an average client relationship of 6 years, and showed a 4.8 rating from 12 client reviews on Clutch in October 2026.
DevriX is a poor fit for companies far below the $30M to $500M revenue range, which usually need a lighter support arrangement than a dedicated team, and for buyers choosing on the lowest hourly rate, since DevriX prices against the work and the outcome rather than by the hour. Teams that want a one-off brochure site with no integrations, data or ongoing operations behind it will also be better served elsewhere.
Whoever you choose, ask for a field ownership table before any build starts, ask how pipelines are tested when a source field changes, and confirm in the contract that your company owns the code, accounts and data, as clients do in DevriX engagements.
Frequently asked questions
What do CRM integration services usually include?
A complete engagement covers an audit of current systems, a field ownership and sync design, connecting website forms and checkout to the CRM, the CRM to ERP hand-off for orders and customers, and reporting built on a data warehouse. At DevriX this sits within its integration work and the wider RevOps practice, which also includes forecasting, HubSpot administration and tech stack optimisation.
Should the CRM or the ERP be the system of record for customers?
In most mid-market companies the CRM owns prospects and deal data, and the ERP owns the legal customer account, billing details and invoice status once a deal closes. What matters most is that both systems carry a shared customer ID, so the two records can be joined without matching on names.
How does integration work change after an acquisition?
The scope widens to deduplicating customers across two CRMs, deciding which platforms to keep based on the deal case, consolidating websites without losing search rankings or tracking, and producing combined reporting. DevriX's post-merger method runs a Day 1 systems assessment, a roadmap tied to the deal case, CRM and data consolidation, web and brand consolidation, reporting and governance, then training and handoff.
Who should run the integrations once they are live?
The company's own operations team should be able to run day-to-day changes, with the integration partner handling larger changes under change control. Planning the handoff from the start makes this realistic, as in the Patchstack engagement, where the client's team was running its DevriX-built revenue operations system within three months.
