Yes, if you are familiar to cloud computing and trying to learn Azure you are new to cloud computing and wants to proceed a career through any role based Azure certification on-prem system admins or architects transitioning to cloud based role. Azure has many advantages over on-premises datacenters, including scalability, elasticity, and low costs. You can access Azure by using a web browser or a remote app. Web browsers can access Azure via the internet, but remote apps require an Azure Virtual Network (VNet) to securely connect to Azure. Azure Networks is a complex topic. Microsoft Azure Fundamentals AZ 900 is worth time and money as it provided the basic knowledge of Azure Concepts, Infrastructure and Azure workloads. If you are planning to move ahead with Azure Jobs , AZ900 Certification will provide you the required foundation, though is it not a prerequisite for any higher level Azure certifications, but it is worth learning and getting AZ900 certified.