SD-WAN as a service (SDWaaS) delivers the power of software-defined wide-area networking (SD-WAN) through a cloud-based subscription model. SD-WAN enables businesses to leverage the benefits of centralized management, intelligent path selection, and optimized application performance across distributed locations.
SDWaaS is one possible solution for a company to deploy SD-WAN. Is it the best implementation solution? We’ll explore the pros and cons.
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What Is SD-WAN?
Software-defined wide area network (SD-WAN) provides a next-generation connectivity solution that enhances traditional wide-area network (WAN) architectures. It simplifies operations and reduces costs compared to legacy multiprotocol label switching (MPLS) networks.
An SD-WAN solution can:
- Utilize commodity internet in addition to private networks such as MPLS
- Abstract the network from specific hardware into a unified overlay
- Centralize control for efficient management and visibility
- Automate network functions for business agility and scalability
- Integrate security such as next-generation firewalls and VPNs
- Optimize connectivity and performance for cloud-based applications
SD-WAN delivers a modern, software-defined approach to networking that handles current digital demands. It allows organizations to cost-effectively and scalably support cloud connectivity and strategic initiatives.
Types of SD-WAN Solutions
Here are the five main types of SD-WAN implementations:
- SDWaaS. Subscribe to an SD-WAN service from a managed service provider (MSP) or a carrier. The provider manages the SD-WAN infrastructure, including hardware, software, and connectivity, while you pay a recurring subscription fee. This option is suitable for companies that want to outsource the complexity of managing an SD-WAN.
- DIY (do-it-yourself) SD-WAN. Purchase SD-WAN hardware and software from a vendor and deploy and manage the solution in-house. This option provides more control and customization but requires a skilled IT team to design, implement, and maintain the SD-WAN.
- Hybrid SD-WAN. Manage some aspects of the SD-WAN in-house while outsourcing others to a service provider. This approach allows for a balance between control and outsourcing based on your needs and capabilities.
- Managed SD-WAN. Similar to SDWaaS, the company engages a service provider to manage the SD-WAN solution. However, in this case, you own the SD-WAN hardware and software, while the provider handles the configuration, monitoring, and maintenance of the network.
- Cloud-based SD-WAN. Some SD-WAN solutions are delivered entirely from the cloud, eliminating the need for on-premises hardware. This model is highly scalable and can be quickly deployed, making it suitable for companies with distributed workforces or rapidly changing network requirements.
Pros of SDWaaS
SDWaaS makes SD-WAN deployment and maintenance easier. Here are the benefits of SDWaaS over other SD-WAN implementation options.
- Simplified management. SDWaaS offloads the complexity of managing the SD-WAN infrastructure to the service provider and allows the company to focus on its core business objectives.
- Reduced IT burden. With SDWaaS, the company doesn’t need to maintain a large, skilled IT team to design, deploy, and manage the SD-WAN solution.
- Predictable costs. SDWaaS typically involves a predictable monthly subscription fee which makes it easier for companies to budget for their network expenses.
- Scalability. SDWaaS providers can easily scale the network resources up or down based on the company’s changing requirements.
- Faster deployment. SDWaaS can be deployed quickly, as the provider has the necessary infrastructure and expertise in place.
Cons of SDWaaS
While SD-WAN as a service offers many benefits, it has some potential downsides:
- Limited control. With the SD-WAN infrastructure, you may have less control over certain configurations and management aspects compared to a self-managed SD-WAN solution.
- Dependency on the provider. You rely on the SDWaaS provider for network performance, security, and support, which can be a risk if the provider experiences issues or outages.
- Long-term costs. While SDWaaS offers predictable monthly costs, the total cost of ownership over an extended period may be higher than a DIY approach.
- Security concerns. Your security is only as good as your provider’s security. If you’re in a highly sensitive industry, this may be a problem for you.
- Integration challenges. Depending on your setup and your provider, you may face integration challenges. In some cases, a DIY or hybrid model offers more flexibility.
Key Features of SD-WAN as a Service
SD-WAN as a service offers the following features:
- Cloud-based services. SD-WAN as a service delivers its capabilities through a cloud-based model, which eliminates the need for extensive on-premises networking hardware. This allows for easy scalability and flexibility in managing the entire network.
- Centralized management. SDWaaS provides a centralized management console that enables administrators to configure, monitor, and control the SD-WAN architecture across all branch offices and remote locations. This simplifies network operations and reduces operational costs.
- Application-aware routing. SD-WAN technology intelligently routes application traffic based on business requirements and network conditions. It prioritizes critical applications and ensures optimal performance by selecting the best available connectivity option.
- Dynamic path selection. SDWaaS dynamically selects the most suitable network path for each application based on real-time network conditions. It leverages multiple connection types, such as MPLS, broadband internet, and LTE, to ensure reliable connectivity and optimal performance.
- Quality of service (QoS). SDWaaS offers granular QoS capabilities and allows organizations to prioritize and allocate network bandwidth based on application requirements. This ensures that critical applications receive the necessary resources for optimal user experience.
- Security services. SD-WAN integrates advanced security features, such as encryption, firewalls, and secure access, to protect data transmission across public internet connections. It also supports integration with cloud access security broker solutions for enhanced cloud security.
- Zero-touch provisioning. SD-WAN enables rapid deployment of branch offices and remote locations through zero-touch provisioning. This feature allows organizations to quickly bring new sites online without requiring extensive manual configuration.
- Analytics and reporting. SD-WAN as a service provides detailed analytics and reporting capabilities and gives network administrators insights into application performance, network utilization, and potential issues.
- Integration with cloud platforms. SDWaaS seamlessly integrates with major public cloud providers, such as AWS, Azure, and Google Cloud. This enables organizations to establish secure connections between their branch offices and cloud infrastructure.
- Flexible deployment options. SD-WAN offers flexible deployment options to suit different business requirements. Organizations can choose fully managed SD-WAN services, co-managed models, or self-managed solutions based on their preferences and IT capabilities.
How to Implement SDWaaS
Here are some key points on how to implement SDWaaS:
Planning and Assessment
- Conduct a thorough assessment of your current network infrastructure, application requirements, and business goals to determine if SD-WAN as a service is the right fit.
- Identify the specific pain points or challenges you want to address with SD-WAN, such as improving application performance, reducing costs, or simplifying network management.
- Evaluate different SD-WAN as a service providers and their offerings. Consider features, pricing models, service level agreements (SLAs), and customer support.
Deployment and Implementation
- Work closely with the chosen provider to plan and design the implementation strategy, (determine the number of virtual SD-WAN appliances required and their placement).
- Ensure that your existing network infrastructure and security policies are compatible with the provider’s SD-WAN solution.
- Implement any necessary network changes or upgrades, such as adding new internet connections or upgrading existing ones to support the SD-WAN deployment.
- The provider will typically handle the deployment and configuration of the virtual SD-WAN appliances, as well as the initial setup and testing of the SD-WAN service.
Integration and Migration
- Gradually migrate your network traffic to the SD-WAN service, starting with non-critical applications or sites to ensure a smooth transition and identify any potential issues.
- Integrate the SD-WAN service with your existing network infrastructure, cloud services, and applications, with the provider’s expertise and guidance.
- Configure application-aware routing policies and traffic-shaping rules to prioritize critical applications and optimize performance.
Management and Monitoring
- Utilize the provider’s centralized management platform to monitor the SD-WAN service, track performance metrics, and make any necessary configuration changes.
- Leverage the provider’s expertise and support services for ongoing maintenance, troubleshooting, and software updates.
- Regularly review and adjust the SD-WAN settings and policies to align with your evolving business needs and application requirements.
Optimization and Scaling
- Take advantage of the SD-WAN as a Service model’s flexibility by easily scaling up or down the number of virtual appliances and bandwidth as your needs change.
- Continuously monitor application performance and user experience, and work with the provider to fine-tune the SD-WAN configuration for optimal results.
- Explore additional features or integrations offered by the provider, such as security services or cloud connectivity optimizations, to further enhance the SD-WAN solution.
Future of SDWaaS
The future of SD-WAN as a Service promises to be exciting, with several trends and advancements shaping its evolution:
Security Enhancements with SASE
Security remains a paramount concern for SD-WAN services. The integration of Secure Access Service Edge (SASE) with SD-WAN is a key trend that offers a comprehensive approach that combines network and security functions with cloud-native capabilities.
SASE provides a unified framework to deliver secure and fast cloud access, making it an essential component for the future of SD-WAN services. This integration addresses the increasing complexity and volume of cyber threats. It ensures that SD-WAN architectures can offer robust security measures including zero-trust network access, firewalls, and intrusion prevention systems.
Cloud and Multi-Cloud Integration
The shift towards cloud and multi-cloud environments is another driving force behind the evolution of SD-WAN services. As businesses increasingly rely on cloud-based applications and infrastructure, SD-WAN technologies are evolving to provide optimized connectivity and performance for cloud services. This includes enhanced support for cloud-native applications and the ability to manage traffic across multiple cloud platforms efficiently.
The future of SD-WAN as a service will see deeper integration with cloud ecosystems which will enable seamless access to different cloud services and facilitate a more agile and scalable network infrastructure.
AI and Machine Learning Integration
AI and machine learning (ML) technologies are set to play a crucial role in the future of SD-WAN services. With AI and ML, SD-WAN solutions can achieve smarter traffic management, automated path selection, and proactive issue resolution. These technologies enable SD-WAN services to optimize network performance dynamically, enhance security through predictive analytics, and improve the overall user experience.
The integration of AI and ML will make SD-WAN networks more intelligent, self-healing, and capable of adapting to changing network conditions in real time.
SDWaaS Providers
The SDWaaS market has rapidly expanded as leading vendors introduce innovative SD-WAN products. Here’s an overview of key SDWaaS providers and their offerings that enable next-generation WAN transformation.
- VMware SD-WAN by VeloCloud: VMware’s SD-WAN platform utilizes VMware SD-WAN Edge devices. One of the leaders in the SDWaaS industry.
- Cisco SD-WAN: Cisco’s offering provides flexible deployment options as software, hardware, or cloud-delivered.
- Palo Alto Networks Prisma SD-WAN: Prisma SD-WAN integrates next-gen security with SD-WAN capabilities on physical and virtual appliances.
- Citrix SD-WAN: Citrix provides a unified application delivery platform with its virtualized SD-WAN solution.
- Lumen SD-WAN: Lumen Technologies offers SDWaaS service using its EdgeConnect SD-WAN platform.
If you’re having difficulty navigating the world of SDWaaS providers and determining the best fit for your organization, we can help. Symplicity is a supplier-neutral SD-WAN consultancy that works as an extension of your team to make sure you get the optimal solution.
About Symplicity
Symplicity is a leading expert in SDWaaS deployment. Our specialization lies in delivering the right solutions for your business that can transform the way you manage your network and optimize your connectivity. We can help you assess providers, craft a deployment plan, and set a budget.
Our commitment is to offer you the expertise, guidance, and ongoing support needed to ensure a seamless implementation of your SDWaaS strategy. We can help you assess the right providers, craft a deployment plan, and set a budget.
Explore our solutions page for a comprehensive overview of the services we provide.
SDWaaS FAQ
Is SD-WAN still relevant?
SD-WAN is still highly relevant and continues to gain traction in the enterprise networking space. It offers benefits such as improved application performance, simplified management, and cost savings, making it a compelling solution for modern, distributed networks and cloud-centric architectures.
What is the difference between SD-WAN and MPLS?
The difference between SD-WAN and multiprotocol label switching (MPLS) lies in their architecture and application. SD-WAN is a software-defined approach that manages WAN connections and can use different transport methods like the internet, MPLS, or LTE.
MPLS is a protocol that routes data using predetermined paths and is known for its reliability and performance for data traveling along these paths.
Is SD-WAN better than WAN?
SD-WAN can be considered better than traditional WAN in certain aspects, such as agility, cost-effectiveness, and the ability to dynamically manage traffic. SD-WAN provides a virtualized connection that can be easily altered based on business needs, unlike traditional WAN which may require more hands-on programming for changes.
What is the difference between SD-WAN and SASE?
Secure access service edge (SASE) is a comprehensive security and networking architecture that combines SD-WAN capabilities with cloud-based security functions such as CASB, SWG, FWaaS, and ZTNA.
SD-WAN focuses primarily on optimizing WAN connectivity and application performance, while SASE provides a converged solution for secure, optimized access to applications and resources.
What are the types of SD-WAN architecture?
The main types of SD-WAN architecture include on-premises or appliance-based, cloud-based (SD-WAN as a service), and hybrid models that combine on-premises and cloud components. Additionally, there are single-vendor and multi-vendor SD-WAN architectures, each with its advantages and trade-offs.
What is the point of SD-WAN?
The point of SD-WAN is to provide a more flexible, cost-effective, and efficient way to manage wide-area networks. It allows for the use of multiple connection types, improves cloud application performance, offers enhanced security, and simplifies the management of network traffic.
Further Reading
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