At L2BEAT, we research and analyze all Layer-2 and Data Availability (DA) solutions extensively. Through our daily work, we've identified recurring challenges in scalability, security, and integration complexity within Ethereum's ecosystem. My motivation for this talk is driven by these firsthand insights and the importance of clearly understanding trade-offs when considering external DA solutions like Celestia. The aim is to provide concise knowledge, empowering the community to navigate these issues effectively.