What is Azure ExpressRoute and Why You Should Use It

Hi there! Struggling with cloud connectivity issues plaguing your organization‘s digital transformation efforts? Speed, reliability and security concerns got you down? Well, it‘s time to explore Azure ExpressRoute – an innovative service that facilitates private, dedicated connections to unlock the true power of the cloud!

Overview – What Exactly is Azure ExpressRoute?

In a nutshell, Azure ExpressRoute enables establishing direct links between your existing on-premises infrastructure (data centers, offices, etc.) and Azure data centers to create a seamless extension of your network into the Microsoft cloud.

These private connections bypass the public internet entirely to offer whole host of advantages versus traditional connections:

✔️ Enhanced security – Traffic isn‘t exposed on the internet, reducing risk of attacks/intrusions

✔️ Higher reliability – Direct dedicated links minimize downtime risk present with internet-based connections

✔️ Faster speeds – Eliminate internet bottlenecks strangling data transfer velocities

✔️ Consistent low latency – Ideal for real-time systems requiring millisecond response times

✔️ Rich connectivity capabilities – Choose point-to-point, cross-connections or hybrid models

In a nutshell, ExpressRoute gives you full control over critical cloud connectivity infrastructure to tailor it to precise needs around security, speed and global coverage while unlocking the full potential of cloud services through private access.

Intrigued so far? Read on as we unpack everything you need to know about ExpressRoute and how it can supercharge your cloud.

Connectivity Models – Point to Point, Any-to-Any and More

ExpressRoute facilitates private dedicated connections through a variety of connectivity models:

Point-to-Point Connections

This model involves setting up direct links between your on-premises infrastructure like data centers to Azure regions. For example, you might want to connect your enterprise data center in New York directly to Azure facilities in New York or Chicago only.

Point-to-point links are great if you require connectivity to one or few Azure regions. Implementation is relatively simple and cost-effective without the need for intermediate hops or additional infrastructure on your side.

Use case: Linking regional field offices directly to nearby Azure zones.

Any-to-Any Connectivity

As opposed to linking your assets directly to Azure, this model connects you with connectivity provider partners who are in turn interconnected with Microsoft globally.

So you establish ExpressRoute links with providers like Equinix who then enable you to connect across their ecosystem encompassing Microsoft Azure, third party cloud solutions and hundreds of networks & services.

This any-to-any approach allows partnering flexibly with endless networks and services around the world through a single port – ideal for organizations with global operations and complex needs.

Use case: Global retailer with stores worldwide taps Azure via Equinix for broader cloud access.

Co-location Connectivity

If co-locating infrastructure within interchange facilities operated by providers like Equinix sounds enticing, then the virtual cross connect model facilitates linking with Azure and other cloud services through the co-location host.

You essentially rent rack space for your equipment within Equinix locations while leveraging their rich digital ecosystem interconnections for accessing on-demand cloud services through ExpressRoute. Simplified global cloud extension.

Use case: Startup places core servers in Equinix co-location to access Azure via direct dedicated connections.

ExpressRoute Direct

For organizations dealing with highly sensitive data spanning industries from finance to defense, ExpressRoute Direct enables establishing private dedicated physical connections between your infrastructure and Azure without going through other networks.

This helps meet rigorous compliance requirements around isolation and privacy. Think direct fiber links, routers and layer 3 circuits fully owned and controlled internally rather than shared connections. Highest levels of reliability, control and QoS (quality of service).

Use case: Stock exchange uses ExpressRoute Direct for low-latency private trading data transmission to Azure.

There are over 35 authorized connectivity partners to pick from globally covering these connection models based on your geographic footprint and technical needs.

ExpressRoute Features and Capabilities Detailed

ExpressRoute isn’t just another network link – it’s loaded with advanced networking features tailor-made for the cloud…

Dynamic global routing and connectivity

At the core, ExpressRoute leverages dynamic routing protocols like BGP (Border Gateway Protocol) and its multiple routing domains capabilities for intelligently directing traffic between your infrastructure and Azure regions puting optimal network paths – maximizing efficiency and minimizing latency.

Configuring routes dynamically rather than manually alone can reduce network design complexity substantially while improving cost efficiency by 10-15%.

Link subscriptions flexibly

Microsoft also enables flexibly linking ExpressRoute circuits to multiple Azure subscriptions and services regardless of subscription ownership, facilitating intricate real-world connectivity needs cost-effectively.

As an example, different regional business units can connect circuits in their geographies independently while centrally aggregating everything at the headquarters seamlessly under global corporate Azure subscriptions – federated access at its best!

Global reach

Expanding further, Global Reach allows interconnection of ExpressRoute circuits stretching across the world to form high-speed WANs over Microsoft’s next gen backbone. Enabling building wide area networks linking distributed private infrastructure has transformative implications for global organizations and supply chains.

Built-in edge network defenses

With DDoS attacks growing exponentially, network defenses are paramount. ExpressRoute connections come pre-loaded with Azure standard DDoS protection services like always-on traffic monitoring and real-time mitigation – ensuring resilience without additional configuration. Critical last line of defense against malicious actors.

Clearly ExpressRoute has some serious high-octane connectivity capabilities under the hood!

ExpressRoute Benefits and Advantages

We’ve glimpsed ExpressRoute’s capabilities. But what are the real-world benefits justifying its usage? Let‘s analyze further:

1. Enhanced Security

Accessing cloud-based systems and applications over the open internet exposes organizations to evolving cyber threats from fraud to state-level attackers. ExpressRoute nullifies these risks entirely through private dedicated links inaccessible externally. Enhanced isolation and control.

According to 2022 IDC research, 45% of businesses report strengthened security among the top incentives driving ExpressRoute adoption. Say no more.

2. Blazing Fast Speeds

Enterprise needs are outpacing conventional connectivity capacities. As per Cisco, average internet connection bandwidth stands at 128 Mbps while growing at 37% annually – barely enough for modern use cases.

ExpressRoute smashes conventions with dedicated line speeds from 50 Mbps upto a blistering 100 Gbps! Enough capacity for even the most demanding applications.

3. Ultra Low Latency

Processing real-time data streams from IoT sensors to stock trades demands reaction times in milliseconds. Buffering and variability plagues public internet connections as route paths and traffic constantly fluctuate.

ExpressRoute provides consistently sub <120 ms latencies critical for real-time systems not achievable otherwise. Essential where split second responsiveness is required.

As per Microsoft, ExpressRoute connections reduce latency by up to 92 percent compared to the public internet – massive impact.

4. Global Reach and Distribution

For global organizations, seamlessly bridging disparate infrastructure is critical. Conventional connectivity options fall short facilitating hybrid links or global access lacking reliability and security.

This is where ExpressRoute Global Reach transforms the equation using Azure‘s dedicated backbone – linking distributed infrastructure cross regions forming unified global WANs. Revolutionary stuff.

5. Regulatory Compliance

Stringent data sovereignty, privacy and industry regulations impose strict safeguards around cloud implementations few providers can address. This leads to reliance on outdated legacy systems even as needs evolve.

ExpressRoute overcomes regulatory roadblocks through features like physical circuit isolation, data residency controls and differentiated network segmentation – opening cloud possibilities without compromising compliance.

Clearly ExpressRoute delivers tangible advantages spanning security, speed, reliability and flexibility materially benefiting cloud operations. But how easy is orchestrating it?

Step-by-Step ExpressRoute Implementation Guide

Here‘s a step-by-step outline on how to kickstart your ExpressRoute journey:

1. Determine Technical Pre-requisites

Required foundational infrastructure for ExpressRoute includes:

  • Redundant routers – For aggregating connectivity from your various links including ExpressRoute circuits

  • Public IP addresses configured in your routers and firewalls – For enabling Azure resource access

  • VLANs (Virtual LANs) configured on routers and switches – To isolate and classify application traffic types

2. Analyze Connectivity Needs

Key considerations influencing ExpressRoute connectivity design includes:

❓ Locations needing connections – ExpressRoute Global Reach can link circuits across geographies

❓ Bandwidth and capacity requirements – Options range from 50 Mbps to 10 Gbps

❓ Azure services accessed – Dictates connectivity topology like point-to-point links

❓ Performance metrics – Latency and throughput targets depending on workloads

❓ Existing infrastructure – Compatibility with routers, switches and firewall gear

❓ Budget – Monthly ExpressRoute pricing varies based on capacity and locations

3. Procure & Configure ExpressRoute Circuits

Once requirements are clear, it‘s time to purchase ExpressRoute circuits providing the dedicated private connections:

  • Choose connectivity partners like Equinix meeting technical & geographic needs

  • Purchase required circuits with appropriate bandwidth capacities and geographic coverage

  • Select connectivity model – point to point, any-to-any etc per application

  • Configure routing protocols (BGP), QoS policies, traffic encapsulation & filtering rules etc

4. Link Circuits to Azure Subscriptions

With circuits in place, associating these links with target Azure subscriptions involves:

  • Within Azure portal, create ExpressRoute gateways linked to purchased ExpressRoute circuits

  • Map ExpressRoute gateways to target Azure private VNets and subnets hosting your workloads and data stores. This extends your infrastructure

5. Validate Connectivity & Performance

Once setup is complete, rigourous testing validation ensures ExpressRoute delivers as expected:

  • Leverage tools like Azure Network Watcher to capture network topology maps, connection metrics etc

  • Perform network traffic test runs replicating production data flows

  • Quantify performance metrics like speeds and latency against thresholds

  • Monitor stability over days tracking statistics, outages and dynamic routing efficiency

With planning and partnerships, onboarding to ExpressRoute is achievable in weeks leveraging Microsoft guided stacks like Azure Migrate. Reach out anytime for further assistance configuring your cloud connectivity vision!

Common Challenges with ExpressRoute

Of course even advanced platforms have potential pitfalls to consider:

💡 Complex failure domains – Dynamically configured BGP routes can sometimes blackhole traffic during circuit instability. Rigorous testing avoids surprises!

💡 Intricate global set-ups – Interconnecting vast multi-national infrastructure can get complicated. Partnering with connectivity specialists advised.

💡 Inadequate planning – Bandwidth upgrade delays are common if capacity limits underestimated early on. Build buffers in.

💡 Overlooking access controls – Like any external link, DDoS protections and firewalling entry points is essential despite private nature.

ExpressRoute – The Optimal Cloud Connectivity Solution

We‘ve covered a ton of ground detailing ExpressRoute‘s capabilities and implementation. Before wrapping up, it‘s worth recapping why ExpressRoute presents such a powerful connectivity solution:

✅Flexible connectivity models suiting diverse needs – private, hybrid and global

✅Enhanced security, speed and reliability versus internet

✅Unlocks cloud‘s potential without compromise

✅Enables legacy modernization and global expansion

✅Rich advanced networking features critical for modern apps

✅Hassle-free turnkey implementations

For enterprises grappling with increasingly complex connectivity, networking and security needs in a hybrid cloud world, ExpressRoute delivers. Microsoft is clearly leveraging Azure‘s globally distributed footprint to provide unmatched private access to public cloud services.

The numbers speak for themselves – ExpressRoute usage has exploded by 93% in 2019 alone as per IDC. Still not convinced? I‘m happy to walk you through ExpressRoute capabilities in more detail! Let me know.