Four years ago, Square branched out into peer-to-peer transactions via its Cash App. After doing so, users started increasing by the minute and they needed to come up with a long term solution for scalability. Vitess was the answer to the scalability issue. With Vitess, Cash App didn’t have to completely change how developers built applications and were able to change only 5% of their system vs. 95% to respond to increased customer demand. Additionally, Cash App developers can do multiple shard splits per week with less than a second of downtime. Read the full case study here.