VWO FullStack
A/B testing tools
Conversion rate optimization tools
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- Information technology and software
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What is VWO FullStack
VWO FullStack is a feature experimentation and rollout product used to run A/B tests and feature flags on server-side and mobile applications. It targets product, engineering, and growth teams that need controlled releases, experimentation, and measurement beyond browser-based testing. The product supports SDK-based implementation across multiple languages and environments and is typically used for feature rollouts, holdouts, and product-led growth experiments. It sits within the broader VWO platform, which also includes web experimentation and other optimization capabilities.
Server-side experimentation via SDKs
VWO FullStack supports experimentation through SDKs, enabling tests and feature flags in backend services and native apps rather than only in the browser. This approach helps teams test logic that is not accessible to client-side tools, such as pricing rules, recommendation algorithms, or API responses. SDK-based implementation also allows experiments to run with lower dependency on front-end release cycles. It fits organizations that want experimentation embedded into application code and CI/CD workflows.
Feature flags and controlled rollouts
The product includes feature flagging and rollout controls that support staged releases and risk reduction. Teams can gradually expose features to defined user segments and use holdout groups to compare outcomes. This is useful for operational rollouts where reliability and reversibility matter. It aligns with common experimentation programs that combine release management with measurement.
Part of VWO platform
VWO FullStack integrates into the broader VWO product suite, which can simplify vendor management for teams already using VWO for web testing or optimization workflows. Shared governance, user management, and reporting conventions can reduce overhead compared with stitching together separate tools. For organizations standardizing on one experimentation vendor, this can streamline procurement and administration. It also supports cross-team collaboration between product, engineering, and optimization stakeholders.
Engineering effort to implement
Because it relies on SDKs and server-side integration, VWO FullStack typically requires engineering time for instrumentation, event design, and deployment. This can slow initial time-to-value compared with purely visual or client-side testing tools. Teams also need to manage versioning and ensure consistent tracking across services and apps. Smaller teams without dedicated engineering support may find adoption harder.
Experimentation governance complexity
Running server-side experiments introduces governance needs such as consistent user identity, exposure logging, and avoiding conflicting experiments. Without strong processes, teams can create overlapping flags or tests that complicate analysis. This is a common challenge in feature experimentation tools where multiple squads ship concurrently. Organizations may need additional internal standards and review workflows to maintain experiment quality.
Best fit for product experiments
VWO FullStack is oriented toward product and engineering experimentation rather than end-to-end marketing conversion workflows. Teams focused primarily on landing-page optimization may still need separate web-focused tooling and processes. This can lead to a split stack if both server-side product tests and browser-based CRO are required. Buyers should validate how reporting and workflows align across their web and app use cases.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Growth | Custom / MTU-based (contact sales) | Feature Experimentation basics (Feature Rollouts, Feature Flags with limits: 10 flags, 5 variables), Open-source SDKs, enhanced targeting, email & chat support (24x5). Intended for small businesses; Growth allows up to 250K MTU (per account UI). |
| Pro | Custom / MTU-based (contact sales) | Adds unlimited metrics, feature flags, variables & environments, personalization rules, multivariate testing, advanced targeting & reporting, advanced AI CoPilot features, phone support (24x5). Intended for mid-sized businesses; Pro allows up to 1M MTU. |
| Enterprise | Custom / MTU-based (contact sales) | Dedicated CSM & 1:1 training, all targeting & reporting options, mutually exclusive groups, SSO, API access, 24x7 support, custom MTU volume (>1M) and enterprise-grade features. |
Notes: VWO FullStack (legacy server-side testing product) has been upgraded into the unified "Feature Experimentation" product; pricing across Feature Experimentation (and related VWO products) is MTU (Monthly Tracked Users) based and VWO does not publish public monetary list prices on its website — customers are asked to contact sales or schedule a demo. A 30-day free full-featured trial (no credit card) is offered on the official site.
Seller details
Wingify Software Pvt. Ltd.
New Delhi, India
2010
Private
https://vwo.com/
https://x.com/vwo
https://www.linkedin.com/company/wingify/
