As an accomplished and versatile GCP expert, I've successfully leveraged the Google Cloud Platform to configure domains, implement SSL certificates, and setup CDNs for numerous clients. Your need for a clean WordPress Multisite server only adds to my suitability for the task at hand.
My diverse background ensuring smooth operations on various web servers (IIS, APACHE, NGINX), virtualization (MS Hyper-V, VMware Server, VirtualBox), and host of other relevant platforms make me proficient in delivering clean and efficient solutions specific to your requirements.
In addition to deploying GCP, I possess in-depth understanding of server operating systems like Windows Server 2016 Amazon Linux, Debian, RHEL to provide you a multifaceted perspective in implementing these crucial changes within your infrastructure. Trust me with your project; I'll guarantee you not only get a secure site but also an optimized one that performs at its peak - all integral aspects of any successful website or web application. Let's make your digital journey safe and swift together!