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ENGINEERING GUIDE · OPEN NETWORKING Open Networking — From Disaggregated Hardware to Programmable Fabrics Open networking is not a single product or protocol. It is an architectural approach that separates hardware, network software, control, telemetry and automation so infrastructure can become more programmable, interoperable and adaptable. The important engineering shift …

Cisco ACI Components Cisco Application Centric Infrastructure (ACI) represents a different way of approaching data centre networking. Rather than treating the network primarily as a collection of individually configured switches and interfaces, ACI uses application requirements and policy as the foundation for how connectivity, segmentation, and network behaviour are defined. …

Zero Trust SASE The traditional network perimeter has become increasingly difficult to define. Users work from offices, homes, mobile devices, and third-party locations, while applications and data are distributed across private data centres, SaaS platforms, and public clouds. In this environment, security cannot depend solely on whether a connection originates …

Monitoring Microservices Matt Conran As applications move from monolithic architectures toward distributed services, understanding what is happening inside the system becomes increasingly difficult. A single user request may travel through an API gateway, several microservices, databases, message queues, and external services before a response is returned. When something goes wrong, …

Cisco ACI | ACI Infrastructure Modern data centre networks are no longer designed simply around VLANs, subnets, and device-by-device configuration. Applications are distributed across physical servers, virtual machines, containers, private infrastructure, and cloud environments, creating a much more complex set of connectivity and security requirements. Cisco Application Centric Infrastructure (ACI) …

As organisations distribute applications, users, and workloads across data centres, public cloud platforms, SaaS services, branches, and remote locations, the traditional model of sending traffic back through a central corporate network becomes increasingly difficult to scale. Secure Access Service Edge (SASE) addresses this challenge by bringing networking and security capabilities …

Modern enterprise WANs rarely depend on a single type of connection. Organisations may combine MPLS, broadband Internet, dedicated connectivity, 4G/5G, and cloud access across a large number of sites. The challenge is no longer simply connecting locations; it is building a WAN that can adapt to changing application requirements while …

Enterprise WANs have changed significantly as applications move beyond traditional data centres and users become increasingly distributed. Branch offices may depend on cloud platforms, SaaS applications, Internet services, and private applications at the same time, while connectivity may combine MPLS, broadband, fibre, and cellular services. SD-WAN provides an architecture for …

Zero Trust Network Design Modern organizations no longer operate within a clearly defined network perimeter. Applications are distributed across data centres, public and private clouds, SaaS platforms, and branch environments, while users and devices connect from offices, homes, mobile networks, and unmanaged locations. In this environment, simply separating the internal …

Ansible variables are one of the foundations of effective automation. They allow playbooks to separate automation logic from configuration data, making the same workflow reusable across different hosts, environments, applications, and deployment stages. Instead of hard-coding values directly into tasks, variables can represent everything from IP addresses, ports, package versions, …

Ansible Architecture Ansible uses a deliberately simple architecture: automation is defined centrally and executed against managed infrastructure without requiring a traditional agent on each target system. This agentless control model is one of the reasons Ansible is widely used for server configuration, application deployment, network automation, and infrastructure operations. At …

OpenShift SDN OpenShift SDN provides a software-defined networking model for connecting workloads across a containerised platform. Rather than treating networking as a collection of manually configured physical connections, SDN abstracts the underlying infrastructure and provides programmable mechanisms for connecting workloads, enforcing isolation, and controlling traffic between application environments. At the …