# Centercode > Centercode is a beta testing and delta testing platform. Product teams use it to recruit testers, run structured pre-release tests, collect and prioritize user feedback, and prove launch readiness. Centercode coined the terms delta testing and Delta Score. ## Product - [Platform overview](https://www.centercode.com/platform/overview): The Centercode beta testing platform: tester recruiting, test management, feedback automation, and reporting. - [User acceptance testing](https://www.centercode.com/platform/user-acceptance-testing): UAT software for running user acceptance tests at scale. - [Pricing](https://www.centercode.com/pricing): Plans and pricing. - [Demo](https://www.centercode.com/demo): See the platform in action. ## Key concepts - [What is delta testing](https://www.centercode.com/what-is-delta-testing): The definitive explanation of delta testing, the agile successor to traditional beta testing. - [The Ultimate Guide to Beta Testing](https://www.centercode.com/guides/the-ultimate-guide-to-beta-testing): The complete beta testing methodology. - [The Ultimate Guide to User Acceptance Testing](https://www.centercode.com/guides/the-ultimate-guide-to-user-acceptance-testing-uat): UAT from planning to sign-off. - [Glossary](https://www.centercode.com/glossary): Definitions for 100+ product and user testing terms. ## Choosing tools - [Beta testing tools buyers guide](https://www.centercode.com/guides/buyers-guide-beta-testing-tools): How to evaluate beta testing tools. - [Comparisons](https://www.centercode.com/comparisons): Centercode vs UserTesting, Applause, TestFlight, Instabug, SurveyMonkey, and BetaTesting. ## Proof - [Customer stories](https://www.centercode.com/customers): Case studies from product teams. - [Managed services](https://www.centercode.com/services/managed-testing): Managed beta testing services.