BitDive is a regression testing and runtime verification platform for JVM teams. QA and developers turn real executions into deterministic Maven and JUnit replay tests with auto mocking for DB, Kafka, and APIs. The same captured scenarios power AI and agents to self validate code changes by replaying before and after behavior with full method level call traces for instant root cause.BitDive reduces QA tech debt by replacing fragile automation with deterministic replay based on real behavior. It isolates dependencies by auto generating mocks for JDBC, HTTP, Kafka, and gRPC from observed executions, so tests stay stable across refactors and API evolution. When a replay fails, BitDive provides white box visibility with cross service call chains, method parameters and results, exceptions, and SQL queries, making root cause clear without log archaeology. Setup is fast, add the libraries, paste a UI generated config, start capturing scenarios, then run replays locally, in CI/CD, or in staging to catch regressions and semantic drift before release.