$)$ If PaaS can't be entirely replaced by FaaS, propose a strategy to effectively integrate both in a cloud application. Discuss aspects like component decomposition, inter$-$service communication, and data consistency. $2)$ If PaaS can be replaced by FaaS, identify two most significant technical challenges that may arise when migrating from PaaS to FaaS. Suggest solutions to these challenges. In both cases, you can exemplify with a hypothetical business application to help explain your argument $($e$.$g$.,$ a customer relationship management system, an e$-$commerce platform, or an inventory management system$).$