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Brands across the world continue to trust us for over a decade, and we continue to deliver on their trust
VWO’s success formula trusted by leading brands
VWO has in-depth, intuitive functionalities and features to help you run and scale complex tests that help you build stellar user experiences.
Create
Create control and variations to test any part of the visitor journey, including front-end, back-end, or middleware.
Target
Tailor test audience your way with built-in options, custom targeting conditions, or behavior-based attributes and events.
Track
Optimize conversions for vital business goals. Track standard or custom metrics to monitor conversions, revenue, and more across tests.
Decide
Make data-driven decisions confidently with reliable, real-time impact reports based on Bayesian statistics.
Rollout
Don't miss out on any conversions. Instantly push winning experiences to production without any dependency.
Test across your entire tech stack
Centralize testing across product, marketing, and development teams. VWO empowers you to test everything from content to UI, search results, and algorithms under one roof.
Secure and fast testing
Run tests without sacrificing performance or security with a one-time setup of VWO’s secure and lightweight SDKs.
Setup simulated environments
Maximize the success of your production rollouts by setting up simulated environments for project-specific testing.
One-click feature test control
Efficiently manage features and feature variables for testing by releasing them behind flags with on/off toggle switches.
Ensure experience continuity for users
Deliver consistent experiences across all your digital properties, even when you run tests across multiple channels and devices.
Lowest impact on page performance
VWO’s asynchronous SmartCode loads page changes asynchronously when the web page loads, reducing page load time.
Make advanced modifications easily
Create advanced webpage variations with pop-ups, forms, and more with the widget library and code editor.
A/B, Split, and Multivariate Tests
Use A/B, Split, or Multivariate tests to optimize conversions by testing elements or combinations against each other.
Support for single page applications (SPAs)
VWO supports popular SPA frameworks like React, Gatsby, Next.js, Vue.js, and Angular.
Plug and play SDKs
Get SDKs for iOS & Android operating systems with extremely swift plug-and-play capabilities.
Deliver consistent experiences for users
VWO’s secure, lightweight, easy-to-integrate SDKs in 8+ languages ensure visitors get a consistent experience across devices.
Configurable errors & messages
VWO SDKs log events and let you customize logs, errors, and messages according to business needs and keep your team in sync.
App-specific simulations
Set up simulated environments per app for testing. Ensure production-ready changes and confident rollouts.
Select your test audience, your way
Extensive audience selection options with your user data to run tests the way you want.
Versatile audience selection options
VWO has comprehensive options to create and reuse visitor target segments. Create segments based on traffic source, device type, visitor type, operating system, browser, behavioral data, custom user events, and even data from third-party sources such as Tag Manager, Segment, and Marketo.
Customizable selection logic
Implement advanced selection logic through AND/OR operators and group conditions using parentheses to build highly-specific segments.
Activity-driven user selection
Select users to become part of tests based on their historical behavior. Integrate VWO with CDPs and use their historical attributes stored externally to select visitors.
Custom user qualification
VWO does the heavy lifting to qualify users for a test according to the targeting conditions set. You can choose if VWO has to qualify the visitor every time they land on your site or just the first time.
Optimize experiences by tracking your North Star metrics
Run tests to optimize metrics that matter to your business with VWO’s custom goals.
Prioritize metrics your way
Set up the primary and secondary metrics from any third party via integrations to determine which variation performs better concerning these metrics. VWO declares a winner based on your primary goal.
Use metrics library with just a click
Use out-of-the-box options or pull in metrics from the metrics library or a metric cluster to swiftly get started with optimizing critical KPIs.
Protect critical metrics performance Coming soon
Configure critical business metrics under guardrail metrics to ensure tests don’t negatively influence them. VWO automatically pauses tests or notifies you if guardrail metrics get impacted.
Inverse winner metrics Coming soon
Set up inverse winner logic for negative metrics such as crash-rate, and cart-abandonment rate, which should ideally reduce in value. VWO declares winners based on ‘Worse Than Control’ for inverse metrics.
Take data-driven decisions based on statistically valid reports
Accurate reports based on Bayesian Stats that help you and your stakeholders make data-driven business decisions with precision.
Accurate results, always
VWO's Bayesian-powered stats engine for tests ensures your test results are accurate by handling peeking errors and multiple testing errors.
Complete visibility into performance Coming soon
Improved VWO reports show you the probability to be ‘Better Than Control’, ‘Worse Than Control’, and ‘Practical Equivalence’, giving you enhanced decision-making power.
Weed out outliers Coming soon
VWO automatically detects outlier values in your tests and makes necessary adjustments behind the scenes to ensure your test results never get skewed.
Zeroed in, Shareable Insights
Filter reports based on out-of-the-box options or custom dimensions. Export reports as CSV, email a link, or forward them to an analytics tool for further analysis.
Rollout variations instantly with zero dependency
Don’t let your winning variations sit idle. Roll them out immediately to maximize conversions.
Rollout test winners immediately
Every conversion missed is a lost opportunity. No more waiting on developers to release the winning variations to production.
Update time-sensitive, business-critical information
Critical updates like a phone number change or a price change shouldn’t have to wait. Update such changes in a jiffy.
Push error fixes in seconds
Spotted a hyperlink error, a wrong spelling or a formatting issue? Fix them immediately without the back & forth.
Test with high velocity and low risk
Feature rollout enables you to test everything in the beta stage. You can test and release features in a phased manner to specific segments.
Collaboratively discover growth opportunities with the power of AI
Build a pipeline of experiments with personalized AI-generated optimization ideas for your website powered by GPT-4. Collaborate easily and see them to completion. Build a Kanban board workflow with observations to feed your testing and personalization campaigns. Add team members without restrictions and run your optimization program like a breeze.
The VWO-Contentful Integration was the biggest feature that appealed to us. We previously used engineering resources to launch every server-side A/B test. Given our team’s large ambitions and limited engineering resources, we could only launch ~1 test every 14-20 days. With the VWO-Contentful integration, we removed the engineering dependency for setting up and launching front-end experiments.
Growth Product Manager at Human Interest
VWO is competitively priced and has a good product offering. It has offered the team here at Digital NRG a great level of insight into customer behavior on our client websites and has allowed us to run a great number of tests. They also have a very responsive team, who are very helpful and take feedback on board when it is needed.
CRO Lead at Digital NRG
VWO is by far the easiest testing tool. Our marketing team doesn’t have to rely on any development resources to create & implement tests. The variables offered for A/B and Multi-variate testing fit just about any need. They also have insightful suggestions and tons of real-time examples.
President
I really like that we can use VWO across every department. It's pretty easy to use and straightforward. Test results are easy to read also for people who don’t have testing experience. Testing experience with VWO was quite intuitive for all. UX of the tool was quite accessible as well.
Senior Product Manager
The VWO-Contentful Integration was the biggest feature that appealed to us. We previously used engineering resources to launch every server-side A/B test. Given our team’s large ambitions and limited engineering resources, we could only launch ~1 test every 14-20 days. With the VWO-Contentful integration, we removed the engineering dependency for setting up and launching front-end experiments.
Growth Product Manager at Human Interest
VWO worked PERFECTLY. It enabled us to make all the changes we wanted rapidly, prove the value of our tests, and grow our client’s sitewide conversion by over 30% in a matter of months. We could not have achieved such growth without VWO.
Founder & CEO
VWO is by far the easiest testing tool. Our marketing team doesn’t have to rely on any development resources to create & implement tests. The variables offered for A/B and Multi-variate testing fit just about any need. They also have insightful suggestions and tons of real-time examples.
President
What has made me stick around with VWO for all these years is that you have the best technical support in the world for any SaaS product. This is the only thing I care about as a marketer – that when I face a technical issue, a competent person will take care of it. Not just send me a link to a help file but actually resolve the issue.
Founder
VWO is competitively priced and has a good product offering. It has offered the team here at Digital NRG a great level of insight into customer behavior on our client websites and has allowed us to run a great number of tests. They also have a very responsive team, who are very helpful and take feedback on board when it is needed.
CRO Lead at Digital NRG
The earlier A/B Testing platform that we had was limiting, in the sense, we couldn’t get deep into the experimentation culture, we had no control over the process, the analysis wasn’t as actionable as we would like, leaving us thinking if we should go live with a test or not. For us, VWO is not just an A/B testing tool, but a comprehensive website utility tool.
UX and Web analyst at Eastpak
VWO is a highly user-friendly and economical tool. It offers an intuitive user interface. It makes it easy to run experiments, gather customer insights, check for leakages in the sales funnels, looking at customer journeys using recordings, and conducting usability tests. The ease of segmenting the audience while creating ‘control’ and ‘variation’ is also something that makes VWO stand out.
Team Lead Conversion & CRO Consultant
My overall experience with VWO has been positive, especially with the fast response to questions and support requests.
CRO Manager
Every A/B testing process aims to bring a significant raise in the conversion rates, and for a SaaS website like POSist which targets niche restaurant industry, this was a 4 month long journey. After months of rigorous testing in between multiple variations of our website with VWO’s Split URL testing campaigns, we were able to register a 50% growth in our organic leads.
Cofounder and CEO
It has been an exciting journey for us with VWO. The collaborative approach of the VWO Services team allowed Utsav Fashion to implement many features on our website based on customer behavior insights. The project forced us to deeply understand customer behavior and innovate fast. We successfully discussed, designed, and implemented a number of campaigns on their merit. I believe all these will help our customers immensely and make their buying journey enjoyable.
VP, Engineering
VWO is by far the easiest testing tool. Our marketing team doesn’t have to rely on any development resources to create & implement tests. The variables offered for A/B and Multi-variate testing fit just about any need. They also have insightful suggestions and tons of real-time examples.
President
What has made me stick around with VWO for all these years is that you have the best technical support in the world for any SaaS product. This is the only thing I care about as a marketer – that when I face a technical issue, a competent person will take care of it. Not just send me a link to a help file but actually resolve the issue.
Founder
A sophisticated testing solution built for your needs
Get an arsenal of features that help you run and scale your testing program comprehensively
Keep tabs on test vitals Coming soon
Get a centralized view of vital metrics such as sample ratio mismatch (SRMs), Time To Convert Warning, Outliers, and Simpson’s Paradox to monitor that your tests are running correctly.
And 100 other features are part of your toolkit when running niche tests that are hyper-specific to your business case.
Get enterprise-grade security and support from day one
Work confidently, knowing that we always have your back for your security and support. Build and scale your testing programs with ease.
Your experimentation data is safe and secure with us
We value our customers' trust in our platform hence we try our best to comply with security and privacy mandates across physical and digital geographies.
Explore Privacy & Security
Data storage
VWO has data centers in the US and Belgium. Our CDN uses a load balancer, is hosted on Google Cloud Platform (GCP), and spans 10 locations spanning Japan to Brazil to ensure faster loads.
Dedicated customer success manager
Leverage our training programs and dedicated success manager to optimize your website for better conversions.
Support with a constant CSAT of ~99%
You can count on us all year round for your most minor query while running the most complex experiments. Our technical experts will guide you all year round.
Role-based permissions
Get Sub-accounts and varying levels of user permissions to bifurcate testing for client/agency and role division for the enterprise.
Leverage our one-click integrations with your favorite tech platforms
VWO offers out-of-the-box integration with 40+ technology apps and will fit like a glove right into your stack.
Integrated test creation
Create variations and run tests confidently with out-of-the-box integration support for content management systems (CMS) and e-commerce platforms.
Leverage external visitor data
Select test audiences based on historical attributes of visitors pulled in from external applications like CDPs and Tag Managers.
Stay on top of your tests
Integrate VWO with productivity applications like Slack to get notifications for key events in your account, like campaign status or user permission changes.
Analyze results extensively
VWO integrates with analytics tools such as Google Analytics and Amplitude for you to push test results automatically for further analysis.
Drive your entire optimization program with VWO
Pair Testing with our end-to-end experience optimization platform to enable a data-driven experimentation culture in your business.
Unlock conversion breakthroughs across your tech stack with VWO Testing
Frequently Asked Questions
Conversion rate optimization (CRO) is the process of optimizing any part of your digital experience based on visitor behavior to help improve the probability of the visitor taking desired actions (conversions) on the said channel.
Yes, we offer a free trial period for you to explore and evaluate VWO Testing. You can test drive VWO Testing and assess whether it meets your needs before committing to a plan. After the trial period, if you wish to continue using it, you can also begin with a free starter plan with limited functionality.
VWO enables client-side testing through a single asynchronous SmartCode and also supports secure, light-weight SDKs in popular front-end and back-end languages for mobile app and server-side testing. To get started with client-side testing, you just need to install the SmartCode on the head section of your website. Similarly to get started with server-side or mobile app testing, you just need to install the relevant SDK to your code base and connect it with the API key obtained from your VWO app dashboard.
For web testing: Visitor quota is consumed as and when visitors become part of the tests running on your website. Each visitor can become part of multiple tests and is counted only once towards the monthly billing cycle. For example, if three tests are running on your website and a visitor becomes part of all three tests in the same month, then the visitor quota consumed is counted as one.
For server-side testing: Visitor quota is consumed as and when visitors become part of the tests running on your a/b testing platform. Each visitor can become part of multiple tests and is counted only once towards the monthly billing cycle. However, the same user ID needs to be passed for the visitor in multiple campaigns to be counted as one. For example, if three tests are running on your platform and a visitor becomes part of all three tests in the same month, then the visitor quota consumed is counted as one (if the same user ID is passed for that visitor).
For mobile app testing: Visitor quota is consumed as and when visitors become part of the tests running on your mobile app. Each visitor can become part of multiple tests and is counted only once towards the monthly billing cycle. For example, if three tests are running on your mobile app and a visitor becomes part of all three tests in the same month, then the visitor quota consumed is counted as one.
All your test data is retained until you have an active paid subscription with VWO. We do not sample or delete data unless specified through settings or actions in an individual test.
SmartStats, VWO’s Bayesian-powered statistics engine is designed to do the heavy lifting when it comes to calculations and accuracy for you and gives you all the ingredients you need to make the right business decisions.
Whenever you open a test report, VWO fetches the up to date conversion and visitor data, runs Bayesian SmartStats on that data, and generates a report for the test where all metrics are up to date. Since a running test is continuously getting more visitors and conversions every second, you can also refresh the test data. You can click on the Refresh data button and VWO will fetch the updated stats for this test. Hovering on the refresh icon also shows you when your data was last updated.
No. VWO is built to scale without any compromise in performance. You can run unlimited number of concurrent tests with as many variations as you please.
No, the use of VWO does not have a negative impact on your website ranking. For A/B and Multivariate tests, both the control and variations run on the same URL and test changes are made by VWO on the fly. There is no scope for content duplication, which otherwise can affect your SEO ranking. Even though Google crawlers support JavaScript and the variation page of the A/B test campaign can be crawled by Google bots, they do not affect the performance of the A/B website. Google also had its own A/B testing solution that would not exist if such tests affected the website rankings.
