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Hybrid networking

Connect Azure, datacenters, branches, and cloud services through a controlled network architecture.

We design and implement addressing, routing, connectivity, segmentation, ingress, egress, private service access, DNS, protection, and diagnostics for hybrid Azure estates.

Scope this Azure workSee technical scope

Hybrid network topology

Hybrid networking technical model

Connected sites

On-premises
Branches
ExpressRouteVPN

Hub / vWAN

Routing
Firewall / NVA
DNS and ingress

Spokes

Applicationprivate endpoint
Dataprivate endpoint
Shared services
Private DNS, policy, route ownership, and flow telemetry cross the topology.
Reference pattern, adapted during design.
Topology
Hub-spoke or vWANArchitecture follows scale, routing, security, and branch needs.
Hybrid
ER, VPN, BGPCircuit and tunnel design includes redundancy and route policy.
Private access
Private Link and DNSName resolution and connectivity are designed together.

Network domains

Hybrid network design covers address ownership through service exposure.

Existing carrier, datacenter, firewall, and DNS dependencies remain visible.

01

Addressing and routing

Establish IPAM inputs, non-overlapping address plans, route domains, BGP policy, propagation, and transitive-routing requirements.

02

Hybrid connectivity

Design redundant ExpressRoute circuits or VPN gateways, peering, BGP sessions, failover behavior, and throughput assumptions.

03

Inspection and segmentation

Compare Azure Firewall with Palo Alto Networks or Fortinet NVA options, define east-west and north-south inspection, and control egress.

04

Application connectivity

Design Front Door, Application Gateway with WAF, load balancing, Private Link, DNS Private Resolver, and private endpoint name resolution.

Network services

Azure and qualified NVA services support distinct network functions.

Vendor selection accounts for support, licenses, throughput, feature parity, and team skills.

Core topology

  • Azure Virtual Network
  • Virtual Network Manager IPAM
  • Hub-spoke
  • Azure Virtual WAN

Hybrid

  • ExpressRoute
  • VPN Gateway
  • BGP
  • Route Server

Security

  • Azure Firewall
  • Palo Alto Networks NVA
  • Fortinet NVA
  • DDoS Network Protection

Application and private access

  • Azure Front Door
  • Application Gateway WAF
  • Private Link
  • Azure DNS Private Resolver

Diagnostics

  • Network Watcher
  • Connection Monitor
  • Virtual network flow logs
  • Azure Monitor

Network delivery

Network change is modeled and tested before traffic moves.

Routing, DNS, inspection, and application behavior are validated as one system.

  1. 01

    Discover

    Collect address space, route tables, circuits, tunnels, DNS zones, firewalls, flows, dependencies, and ownership.

  2. 02

    Model

    Define target topology, prefixes, route propagation, inspection, ingress, egress, DNS resolution, failure modes, and capacity.

  3. 03

    Build and test

    Deploy through code where included, validate reachability, routes, DNS, throughput, logging, and redundant transitions.

  4. 04

    Transition traffic

    Use approved change windows, checkpoints, rollback triggers, monitoring, and post-change verification.

Network assets

Network outputs capture topology, configuration intent, and failure behavior.

Diagrams are paired with tables and tests that engineers can apply.

  1. 01

    Topology and flow set

    Zones, hubs, spokes, branches, circuits, ingress, egress, inspection, private endpoints, and major application flows.

  2. 02

    Address and route plan

    IPAM source, prefixes, ownership, BGP advertisements, propagation, user-defined routes, summaries, and conflict handling.

  3. 03

    DNS design

    Authority, forwarders, private zones, resolver rulesets, private endpoint records, and hybrid query flows.

  4. 04

    Validation runbook

    Reachability, latency, route, DNS, firewall, failover, DDoS, and Network Watcher diagnostic checks.

Network fit

Hybrid networking requires access to both Azure and external network owners.

Carrier and vendor lead times are separated from engineering estimates.

Questions to answer before scoping

  1. Are address spaces unique across connected networks?
  2. Which flows require inspection or private access?
  3. How must routing and DNS fail over?
Bring us the current estate

Best suited to

  • Landing-zone connectivity
  • Datacenter or branch integration
  • Private PaaS and controlled ingress or egress

Needed to begin

  • IPAM and current route information
  • Carrier, firewall, DNS, and application contacts
  • Traffic and availability requirements

Customer responsibilities

  • Order circuits, licenses, and third-party services
  • Approve firewall and route changes
  • Coordinate datacenter and application testing

Not included by default

  • Carrier delivery commitments
  • Third-party appliance licenses or vendor support
  • Application remediation outside network configuration