Your business interacts with customers across websites, social media, email, and in-store visits. Each interaction leaves behind digital identifiers, such as IP addresses, mobile phone numbers, and cookies. But, without a way to connect this data, customer insights remain incomplete.
This is where identity resolution solutions come in. They link different data points from multiple sources to create unified customer profiles. With a clear view of the customer, you can improve marketing strategies, increase engagement, and boost customer satisfaction.
In this guide, you’ll learn how identity resolution works and why it’s important for your business.
What Are Identity Resolution Solutions?
Identity resolution solutions unify all the data you collect from a customer, online and offline, into one accurate, complete profile.
Instead of scattered records, you get a single identity that reflects how a real person interacts with your brand across multiple touchpoints.
What Identity Resolution Actually Does
These platforms gather data from websites, mobile apps, customer relationship management (CRM) tools, email clicks, and even offline sources like postal addresses. They link consumer identifiers using both deterministic (exact match) and probabilistic (pattern-based) methods.
The result is a unified customer profile that spans all digital and offline channels.
Why Identity Resolution Matters for Marketers
With an accurate identity graph, you can personalize messages, serve relevant content, and meet rising customer expectations. It helps you reduce wasted spend, maintain privacy compliance, and create meaningful experiences based on high-quality data and real customer behavior.
The Outcome: Smarter Marketing With Less Waste
Identity resolution solutions give you the clarity to identify individuals, track the customer journey, and act on insights. Whether you're using first-party data or working across devices, you’ll deliver marketing efforts that convert, and build consumer trust in the process.
Top 7 Identity Resolution Solutions for Your Business
Choosing the right identity resolution platform can make or break your ability to identify customers, personalize experiences, and boost ROI. The best solutions don’t just unify data. They help you act on it.
Here are seven of the best at the job.
1. Capturify
Capturify is high-performance identity resolution software built for businesses that want to turn anonymous web traffic into real, qualified leads. It combines deep data enrichment with real-time insights to help you deliver personalized marketing at scale by making it easy to:
Identify Visitors With Precision
Capturify captures over 40 unique data points per visitor, including names, emails, company info, and behavioral patterns, so you can create comprehensive customer profiles from the moment someone lands on your site.
Uncover Hidden Revenue Opportunities
With an industry-leading 55% identification rate, Capturify helps you unlock insights from previously untrackable traffic. This allows you to generate leads, retarget high-intent visitors, and prevent sales funnel leakage with accurate identity resolution.
Plug Directly Into Your Marketing Stack
Capturify integrates seamlessly with CRMs and major platforms like Meta and Google, so you can sync customer data across multiple devices, refine your ad targeting, and automate retargeting campaigns, all without disrupting your existing workflows.
Built With Data Compliance in Mind
Data privacy isn’t an afterthought. Capturify is designed for compliance with global privacy regulations, which makes sure that your identity resolution process respects consumer trust while still delivering high-quality data and actionable insights.
Why Capturify Leads the Market
- Delivers high identification accuracy with real-time visitor insights
- Enhances targeting precision with enriched customer identifiers
- Optimizes marketing efforts across digital and offline channels
- Gives your team the tools to serve relevant content at every touchpoint
Pricing
Starts at $97/month for full access to 40+ data points per visitor, real-time analytics, CRM integration, audience segmentation, and more.
Sign up for free and get your free 500 leads today.
2. LiveRamp
LiveRamp is a comprehensive identity resolution and data connectivity platform that connects consumer data across digital and offline channels. It creates unified customer profiles using pseudonymous identifiers like RampID, helping you recognize the same individual across devices and touchpoints.
Key Identity Resolution Features
- Connects customer data from websites, stores, and mobile apps into a single profile
- Protects personal information by turning it into anonymous IDs
- Helps you target the same person across different devices and platforms
- Lets you send data to ad platforms like Google or Meta to improve targeting
- Measures how well your ads are performing across all marketing channels
Limitations
- Enterprise-level pricing may exclude smaller businesses
- Requires technical setup and some internal resource investment for full value
Pricing
Pricing information for LiveRamp is not publicly disclosed
3. Amperity
Amperity is a customer data platform (CDP) with advanced identity resolution solutions powered by AI. It connects fragmented first-party data to build accurate and persistent customer graphs at scale.
Key Identity Resolution Features
- Uses AI to find and fix errors in customer records automatically
- Updates customer profiles daily with the latest interactions
- Merges data from different tools, even if formats don’t match
- Sends clean, complete customer data to your email and ad platforms
- Makes it easier to personalize messages based on customer behavior
Limitations
- Enterprise-targeted pricing may be high for small and medium-sized businesses (SMBs)
- Steeper implementation curve due to complexity
Pricing
Amperity does not publicly disclose its pricing
4. FullContact
FullContact is a privacy-first identity resolution provider that enables brand and user identity enrichment without relying on third-party cookies or personally identifiable information (PII). Its graph prioritizes trust and data control.
Key Identity Resolution Features
- Matches customer information across emails, phone numbers, and social profiles
- Adds useful details like job titles, locations, or interests to each profile
- Combines online and offline data to give a more complete customer view
- Works with popular CRM and marketing tools
- Ensures your customer data meets privacy and compliance standards
Limitations
- Pricing tiers can be opaque
- Focus is on enrichment and not full CDP or activation stack
Pricing
FullContact's pricing for its identity resolution services is not publicly disclosed
For its Acumen or website visitor identification/lead generation services, pricing is as follows:
- Essentials: $99/month, comes with 150 leads/month, 14 days of browsing analytics history, professional email addresses, LinkedIn profile matching, three platform seats, and more
- Core: $300/month, comes with 500 leads/month, 90 days of browsing history, phone numbers, tenplatform users, coverage for up to five domains, and more
- Plus: Custom pricing
5. Tapad
Tapad is a cross-device identity solution that helps you recognize and reach the same customer across all their devices. It's especially useful for ad targeting, attribution, and creating consistent brand experiences across platforms.
Key Identity Resolution Features
- Recognizes the same person using different devices (laptop, phone, tablet)
- Connects anonymous IDs like cookies or mobile ad IDs
- Helps you show the same ad to the same user across all their devices
- Integrates with major advertising platforms
- Designed to meet data privacy regulations
Limitations
- Focus is on device resolution and lacks customer data profile features
- Mostly suited for medium to large-scale advertisers
Pricing
Tapad does not publicly disclose pricing information
6. Retention.com
Retention.com is built for ecommerce and marketing teams who want to identify website visitors and turn them into email leads, without needing them to fill out a form.
It helps you recover lost sales and grow your email list by capturing contact information from anonymous visitors and syncing it with your email marketing platform.
Key Identity Resolution Features
- Identifies anonymous visitors and links them to email addresses
- Enables remarketing campaigns like cart recovery and welcome flows
- Integrates with ecommerce platforms (Shopify, Klaviyo)
- Prioritizes customer lifetime value through maintainable communications
Limitations
- Focused on email identity; not a full identity graph or CDP
- Email match accuracy varies by vertical
Pricing
Retention.com does not publicly disclose its pricing
7. Acxiom
Acxiom is a legacy leader in consumer data and identity resolution. It helps you build complete, accurate customer profiles by combining your internal data with verified third-party data.
If you need large-scale audience segmentation, omnichannel campaign planning, or compliance-driven data handling, Acxiom delivers enterprise-grade tools and expertise.
Key Identity Resolution Features
- Cleans contact data and resolves identities across touchpoints
- Enriches customer profiles with demographic, behavioral, and firmographic data
- Helps maintain privacy compliance and adds missing attributes
- Supports data-driven audience strategies
Limitations
- Services are often sold as add-ons
- Suited for enterprises with large customer bases
Pricing
Acxiom provides customized pricing based on packages but does not disclose its pricing.
Key Features of Identity Resolution Solutions
Identity resolution capabilities typically feature:
Identity Matching for Accurate Customer Profiles
At the core of identity resolution solutions is identity matching, which is the process of determining whether separate interactions belong to the same person. Platforms use two primary methods to achieve this, which are:
Deterministic Matching
Deterministic matching relies on exact data, such as mobile phone numbers, email addresses, and login credentials. This method offers a high level of accuracy, but it's limited when a customer uses different digital identifiers across multiple platforms.
Probabilistic Matching
Probabilistic matching relies on behavioral signals, device usage, and browsing patterns to connect consumer identifiers when an exact match is unavailable. While it introduces a margin of uncertainty, it is essential for recognizing customers across channels and devices where exact identifiers are not consistent.
Comprehensive identity resolution software combines both methods to improve accuracy and provide a more complete understanding of the customer.
Identity Graphs for a Unified Customer View
To create a reliable view of the customer, platforms generate identity graphs that link digital identifiers such as IP addresses, cookies, and mobile ad IDs. These graphs consolidate disparate data so your business can track customer journeys across different marketing channels.
For example, a customer might browse your website on their laptop, receive a promotional email on their smartphone, and later make a purchase in-store. Without identity graphs, these interactions may appear as separate users, which can lead to inaccurate data and ineffective marketing efforts.
With a well-structured identity graph, your team can understand how customers move across multiple data sources by designing personalized customer interactions and marketing strategies based on real behavior.
Real-Time Data Processing for Accurate Insights
Customer behavior changes rapidly, and your identity resolution platform must keep up. Outdated customer data leads to ineffective targeting, irrelevant marketing messages, and missed opportunities. A strong solution continuously refreshes customer profiles, integrating new data from every touchpoint.
Real-time processing also makes sure that when a customer updates their email address, changes devices, or interacts with your brand in a new way, your system recognizes the change immediately. This improves data confidence, which can equip your team for consistently accurate decision-making.
Privacy and Compliance Features for Secure Data Handling
Your business handles PII, which should make data privacy a top priority. Leading identity resolution solutions focus on first-party data strategies, which reduce reliance on third-party data providers while maintaining compliance with the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) regulations.
Platforms with strong security measures also keep consumer identities protected, even while they enable data collaboration between marketing and customer service teams. They encrypt sensitive data, provide transparency about data collection, and allow customers to control how their information is used.
Seamless Integration With Existing Systems
A reliable identity management solution needs to work seamlessly with your existing CRM, analytics tools, and marketing channels.
Get up to 2500% More Sales With Capturify
Capturify transforms website visitors into actionable leads so you can connect with high-intent prospects before they leave your site. Instead of relying solely on traditional lead capture methods, Capturify identifies and delivers qualified leads directly to increase the likelihood of conversion.
Many website visitors leave without taking action, which makes it difficult to capture potential opportunities. With anonymous visitor tracking, Capturify uncovers key insights about who is browsing your website, including their interests and engagement patterns.
Standard ad retargeting often results in wasted budget and inefficient ad placements. Capturify’s enhanced ad retargeting directs advertising efforts to focus on individuals who have already demonstrated interest, so your business can maximize ad effectiveness while reducing costs.
With Capturify, you gain a competitive advantage by turning website traffic into tangible sales opportunities, with more conversions and more revenue.
Start today with 500 free leads!
FAQs About Identity Resolution Solutions
What is an example of identity resolution?
Imagine someone browses your website on their phone, then later makes a purchase from their laptop using the same email. Identity resolution connects those actions by recognizing the same person across multiple devices.
Using a combination of cookies, email addresses, and device IDs, an identity resolution platform links the data to create a single identity graph. This gives you a unified view of that customer and allows you to deliver personalized experiences across different channels.
What is resolution of identity?
Resolution of identity is the process of figuring out who’s behind all your customer interactions, even when they happen on different online devices or across multiple channels. Instead of having scattered data, identity solutions help you connect the dots to reach the correct individual.
This is essential for brands that want to improve the customer experience, boost campaign results, and overcome common identity challenges like incomplete profiles or device switching.
What is identity resolution software?
Identity resolution software helps you identify your customers accurately, even when they interact with your brand in fragmented ways. It uses both deterministic matching (exact data like email or phone number) and probabilistic matching (behavior-based predictions) to connect digital data across touchpoints.
This gives you a complete unified view of each customer, so you can run smarter campaigns, get valuable insights, and reduce your reliance on third-party cookies.
What are the different types of identity resolution?
There are two main approaches:
Deterministic matching uses specific data, like an email address, to link a person across platforms. It’s highly accurate but depends on having that exact data.
Probabilistic matching looks at patterns like browsing behavior or mobile ad ID to estimate identity. It’s great for uncovering hidden connections when exact data isn’t available.
Most businesses benefit from a mix of both. Combined, these techniques power effective identity resolution that supports multi-touch attribution, improves data accuracy, and helps you reach customers wherever they are in their journey.
