Cloud & Hosting Glossary

Virtual Private Server hosting partitions a physical machine into isolated virtual environments. Each VPS receives dedicated CPU, RAM, and storage resources, offering full root access and scalability without dedicated hardware costs.

An automated process that dynamically adjusts compute resources based on real-time traffic and predefined metrics. Ensures consistent performance during spikes while optimizing costs during low-usage periods.

Non-Volatile Memory Express Solid State Drives use PCIe interfaces to deliver significantly higher read/write speeds and lower latency than traditional SATA SSDs. Critical for database-heavy and I/O-intensive workloads.

A flat-addressable storage architecture designed for unstructured data like images, videos, and backups. Uses RESTful APIs, scales infinitely, and maintains high durability through data replication across zones.

Content Delivery Network distributes cached copies of your content across geographically dispersed edge servers. Reduces latency by serving users from the nearest node, improving page load times and reducing origin server load.

A networking component that distributes incoming traffic across multiple backend servers. Prevents overloading individual instances, enables zero-downtime deployments, and supports health checking and SSL termination.

Web Application Firewall inspects HTTP/HTTPS traffic to block malicious requests, SQL injection, XSS attacks, and other exploits. Operates at Layer 7 of the OSI model, adding a critical security layer between users and your application.

Distributed Denial of Service mitigation systems absorb and scrub malicious traffic floods before they reach your infrastructure. Uses traffic analysis, rate limiting, and scrubbing centers to maintain service availability during attacks.

An open-source container orchestration platform that automates deployment, scaling, and management of containerized applications. Handles service discovery, load balancing, self-healing, and rolling updates seamlessly.

Infrastructure as Code treats infrastructure provisioning as software. Uses declarative or imperative scripts (Terraform, Pulumi, CloudFormation) to version, test, and reproduce environments consistently across dev, staging, and prod.

Service Level Agreement is a contractual commitment defining performance metrics, primarily uptime guarantees. CloudNexus guarantees 99.999% availability with financial credits for any downtime exceeding the agreed threshold.

Network-attached storage that provides raw disk volumes mounted directly to instances. Offers low-latency, high-throughput performance suitable for databases and traditional file systems, with snapshot and cloning capabilities.