Microsoft Azure offers a robust and flexible cloud platform that enables developers to build, deploy, and manage applications at scale. One of the key features of Azure is its support for storage and virtual networks, which are essential components when building modern applications. This solution will provide an overview of how Azure enables the deployment of storage and virtual networks, and how these resources can be utilized to build and deploy Azure applications effectively.

1. Azure Storage Services: Azure provides a suite of storage services that cater to different application requirements. These services include:

a. Azure Blob Storage: Designed for unstructured data, such as images, documents, and videos. It provides cost-effective, durable, and highly available storage.

b. Azure Table Storage: A NoSQL service for storing structured, non-relational data. Ideal for applications that require fast access to large volumes of data without complex relationships.

c. Azure Queue Storage: A messaging service for storing and processing messages between application components, enabling asynchronous communication.

d. Azure File Storage: A fully managed file share service that supports the SMB protocol, allowing integration with existing file systems and applications.

e. Azure Disk Storage: Provides durable, high-performance block storage for virtual machines, suitable for workloads that require low-latency access to data.

2. Azure Virtual Networks: Azure Virtual Networks (VNet) allow developers to create and manage isolated, secure, and scalable network environments for their applications. Key features of Azure VNets include:

a. Isolation and segmentation: VNets allow you to segment and isolate application components, ensuring security and compliance.

b. Integration with on-premises networks: Azure provides hybrid connectivity options, such as VPN gateways and ExpressRoute, to seamlessly integrate VNets with your existing on-premises networks.

c. Network security: Azure offers various security features, including Network Security Groups (NSG) and Application Security Groups (ASG), to protect your applications from threats and control access to resources.

d. Load balancing and traffic management: Azure offers built-in load balancing and traffic management features to ensure high availability and optimal performance.

3. Building Azure Applications with Storage and Virtual Networks: To build and deploy Azure applications using storage and virtual networks, follow these steps:

a. Plan your application architecture: Identify the storage services and virtual network components required for your application based on its requirements and constraints.

b. Create and configure resources: Provision the necessary storage accounts and VNets, and configure their settings, such as access control, replication, and security.

c. Deploy your application: Package and deploy your application, ensuring that it can access the necessary storage services and virtual networks.

d. Monitor and optimize: Use Azure Monitor and other management tools to track your application's performance, identify bottlenecks, and optimize resource utilization.