Introducing Profile Deduplication – Merge Duplicate User Profiles In CDPx To Build Golden Records

First things first – did you know that WebEngage is the ONLY full-stack Customer Data & Engagement Platform that has a composable CDP? We call it CDPx. And, I am super excited to bring you a brand new addition to our CDPx layer – a rule-cum-heuristics based deduplication engine that allows you to merge duplicate user profiles on the go!

Over the years, we’ve seen this play out across hundreds of our customers. Thanks to multiple workflows and touchpoints in any real business, their user data streams are almost never coherent across data sources. And this trickles downstream to systems, including WebEngage. A user signs up on your website, downloads your app, walks into your store, and more often than not, you’re looking at three “different” users in your system who are actually one.

We are excited to launch Intelligent Deduplication – a powerful capability that identifies duplicate user profiles, and merges them into a single record (the Golden Record, if you will). No more messy ETLs and data pipelines. Just a clean data room with unified view of every user.

What is Intelligent Deduplication?

Intelligent Deduplication is a capability in WebEngage that scans your entire user base, identifies profiles that share common properties (like phone number or email), groups them into clusters, and merges them into a single, unified profile – the Golden Record.

Think of it as deep cleaning for your user data, except that WebEngage does the heavy lifting. You tell us what to match on, phone number, email id, a government ID, or their combination, and we handle the rest. Set it up once, and it runs on a schedule i.e. weekly, monthly, whatever works for your business.

Unlike downloading CSVs, matching records in spreadsheets, and re-uploading cleaned data (which if you enjoy, we need to talk 😉), Intelligent Deduplication works directly within the WebEngage ecosystem. Your segments, journeys, campaigns, and analytics all reflect the cleaned-up data automatically.

How It Works

Let’s say you have 50,000 users in your CDPx. Say 10,000 of them are duplicates; same users, but different profiles. Here’s what happens when you run a deduplication job in WebEngage:

Step 1: Choose your matching criteria

You pick the user attribute that’s most consistently shared across duplicate profiles. It can be a phone number, email address or any other attribute which needs to be used for identfying duplicates.

Step 2: We find the duplicates of that user in your database

WebEngage scans all profiles and groups those sharing the same attribute value into a cluster. For example, if three profiles all have the phone number +91-98XXXXXXX0, they form a cluster of three.

Exact matching, like the above, is just the starting point. Real-world data is messy. Phone numbers have typos, names are spelled differently across systems, and the same person might be “Rahul Sharma” in one record and “R S” in another. For cases like these, the system goes deeper. It looks at multiple signals together, whether IDs match, whether age and phone numbers are consistent, and even whether names are approximately the same. Only when enough signals align does it treat two profiles as the same person.

Our customers in healthcare, BFSI, and retail segments, where data comes from multiple sources with varying quality have been asking for this capability ever since we started onboarding them on the CDPx last year. We are very happy to oblige.

Step 3: A winner is selected

When we find duplicates, we need to decide which profile to keep. By default, we keep the one with the most recent activity- the profile that was last seen, last logged in, or created first, in that order.

Even this selection is flexible. For example, if you’re a bank, your in-person registration probably captures KYC documents and verified identity, while your app signup only collects a name and phone number. In that case, you’d want to keep the in-person profile as primary, even if the app profile was active more recently.

So basically just tell us your preferred priority, and we’ll set it up that way.

Step 4: Merge duplicate user profiles

All other profiles in the cluster (the “losing records”) are merged into the winner. The merge is intelligent so it doesn’t just overwrite everything. 

Voila, you are done!

Ready to clean up your customer data?

Intelligent Deduplication is a giant step towards making WebEngage your single source of truth for all things customer data. No more inflated metrics. No more duplicate campaigns. No more fragmented journeys. Just one clean, unified profile for every real user and a sharp CLM execution on top of it. We’re calling it the Golden Record for a reason!

Intelligent Deduplication is a paid feature for customers using our advanced CDPx. Should you wish to learn more, please connect with your account manager or growth consultant to explore further.