Most mobile apps and web services require APIs that are connected to multiple databases that undergo constant change (change events). For example, an ecommerce app may allow users to select different shoes with varying colors, sizes, and prices. Or a health insurance app may require patients or practitioners to choose from options that may quickly change due to unprecedented times.
Testing these database-connected APIs using static calls from something like a CSV won’t properly reproduce real world conditions. That’s why data-driven testing is critical to ensure true uptime, allowing APIs to be run in numerous unpredictable manners, and therefore properly tested for normal and edge cases.