Platform engineering is becoming a critical function within mid-to-large organizations, moving beyond the DevOps trend by focusing on creating self-service tools for developers while ensuring security, compliance, and reliability through DevSecOps practices. Experts at PulumiUP Europe 2024 highlighted core pillars of successful platform engineering which include developer experience, reliability, scalability, security, compliance, automation, and observability. They emphasized the importance of aligning DevOps and security, promoting a culture of collaboration, and addressing challenges such as balancing autonomy and control, driving adoption, and adapting to evolving needs. The panel stressed the need for integrating security early in the development process, automating security measures, and using observability tools to enhance platform health and performance. As platform engineering continues to evolve, its role in supporting scalable and secure development environments will become even more crucial, with success measured through a combination of technical, operational, and business metrics.