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success story

Inside a billion-user app’s strategy for delivering consistent user experiences at scale

One of the world's top five social media platforms regularly releases new features to stay fresh and keep its audience engaged. With billions of active users and thousands of videos uploaded every minute, performance failures were not an option. The platform partnered with Virtusa to ensure a seamless, high-quality user experience across operating systems and devices.

Virtusa built a scalable mobile testing lab and executed thousands of test cases, allowing the platform to continue innovating rapidly, without sacrificing reliability or user satisfaction.

KEY SERVICES
  • Quality assurance (QA) strategy
  • Mobile testing lab setup
  • Accessibility testing
  • Knowledge management portal development
  • Documentation and defect resolution support
KEY TECHNOLOGIES
  • Multi-device and platform testing frameworks
  • Automated test execution tools
  • Accessibility compliance tools 
  • Centralized QA documentation systems

The pressure of perfection at platform scale

Globally, people spend an average of 2 hours and 23 minutes per day on social media. Millions are uploading, watching, and sharing content at any given moment. The pace is constant, and expectations are high. A single new feature, whether a filter, format, or creative tool, can instantly change user behavior.

The challenge for platforms that drive this activity is to move quickly while remaining reliable. That balance was becoming harder to maintain for one of the world's most widely used social messaging platforms. The platform had grown at record speed, reaching one billion monthly active users faster than most. Its success stemmed from short-form, algorithm-driven content that fueled creativity and user loyalty. As new features were introduced weekly, every release had to perform flawlessly across all devices and operating systems. A single bug impacts millions, damages reputation, and reduces user retention. 

To maintain its pace of innovation without compromising user experience, the company brought in Virtusa to strengthen its QA operations.

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1 Billion+

active platform users

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Scaling new features for a billion users

Virtusa worked with the social media giant’s teams in both China and the U.S.A. to provide the right tools and technology for smarter, more accurate scaling. The team established a mobile testing lab capable of executing 300 daily test cases across seven operating system versions and 14 different device types. This setup helped the platform identify and fix issues before they reached end users.

Virtusa's teams worked across service lines and business units to streamline processes and improve efficiency. Beyond testing, Virtusa recommended an asset-light operating model to boost profitability and support long-term growth.

A centralized knowledge management portal was developed to capture insights, streamline documentation, and support defect resolution.

Key outcomes included:

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436 test cases developed

538 accessibility scenarios tested 

Over 1,700 test cases executed

19 unique accessibility issues resolved

37 defects identified in the public version

Speed, quality, and confidence—delivered

Within a week of the partnership, the platform experienced noticeable productivity, speed, and quality improvements. With Virtusa’s support, the platform was able to:  

  • Increase productivity and quality through optimized tools
  • Operate at scale with greater speed
  • Roll out weekly features without compromising user experience
  • Capture cross-functional insights via the Knowledge Management Portal
  • Accelerate documentation sign-off and transfer
  • Execute 300 test cases and detect one valid defect per day
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Broadening QA impact

The social media giant initially partnered with Virtusa for its proven ability to manage large-scale operations and deliver consistent, high-quality results. The confidence paid off. With a strong track record in QA and a structured approach to testing and process optimization, Virtusa delivered measurable impact. Following the success of the first engagement, the platform is expanding QA coverage across new business lines. Positive feedback from internal teams—especially in China—has accelerated growth, with operations scaling rapidly to support broader features, faster releases, and a wider range of user journeys.

 

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538

Accessibility scenarios tested

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300+ 

Daily test cases across devices

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14 

Device types, 7 OS versions

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