Chaos engineering tools such as Chaos Mesh, Gremlin, and LitmusChaos are employed to enhance system resilience by simulating failures and testing responses, which helps identify weaknesses and proactively improve software reliability in cloud-native environments. With the shift towards cloud-native deployments, businesses face increased complexity and potential failure modes, making chaos engineering essential to minimize unplanned downtime that can severely impact business operations. Chaos engineering involves testing a software’s ability to handle failures without affecting functionality, allowing development teams to pinpoint vulnerabilities and improve system reliability. Tools like Chaos Mesh, Chaos Monkey, and Gremlin offer various features and capabilities to perform chaos experiments and ensure systems can withstand issues like network latency and infrastructure performance challenges. These tools are used by leading tech companies to better understand system behavior and improve reliability, with Chaos Mesh and LitmusChaos being open-source and Gremlin offered as a SaaS solution. Each tool has its unique strengths and limitations, offering different levels of configurability, automation, and integration into existing DevOps workflows to support continuous system validation and reliability testing.