Harness Service Reliability Management (SRM) is a new module in the Harness Software Delivery Platform aimed at balancing high feature release velocity with production stability by adopting SLO-driven software delivery. It enhances collaboration and governance between engineering and reliability teams, facilitating the implementation of a Site Reliability Engineering (SRE) program as outlined in Google's SRE Handbook. Harness SRM helps teams avoid the common pitfalls associated with the SRE model, such as manual tracking of SLOs, conflicts between teams, and difficulties in scaling reliability practices. It introduces reliability guardrails within CI/CD pipelines, which use SLO and Error Budget data to determine pipeline progress, ensuring that software development maintains both speed and reliability. The module promotes a cultural shift towards a collaborative relationship between engineering and reliability teams, allowing them to deliver software more efficiently and reliably.