Tauseef FayyazA to Z
Glossary
Every concept in this sheet, plus the smaller terms it uses. Select a concept to open its card.
A
- Azure free account and Azure for Students
- As of September 2026 the Azure free account gives 200 USD of credit for 30 days plus 12 months of select free services.
B
- Budgets and billing alerts
- A budget watches actual or forecast spend and emails you, or triggers an action, when it crosses thresholds you set, such as 50, 80 and 100 percent.
D
- DNS records
- DNS turns names into addresses.
H
- HTTPS and TLS certificates
- TLS encrypts traffic between a client and a server, and a certificate proves the server owns the domain.
I
- IaaS, PaaS and SaaS
- IaaS rents you virtual machines, disks and networks to manage yourself.
- IP addresses and CIDR blocks
- An IPv4 address is 32 bits.
L
- Linux shell essentials
- The commands you use on a cloud server: moving around the filesystem, reading logs, checking disk and memory, managing packages and starting or stopping services with systemctl.
O
- On-demand, committed and spot pricing
- On-demand is pay per second or hour with no commitment.
P
- Ports, TCP and UDP
- A port number picks which service on a machine receives traffic.
- Private IP ranges
- Three IPv4 ranges are reserved for private networks and never routed on the internet: 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16.
R
- Regions and availability zones
- A region is a geographic area with its own data centres.
S
- Service map: compute and data
- The same job has a different product name on each cloud.
- Service map: network, identity and operations
- The networking, identity, monitoring and infrastructure as code services on each cloud, side by side.
- Shared responsibility model
- The provider secures the physical data centres, hardware and the platform.
- SSH key pairs
- A private key that stays on your laptop and a public key placed on the server.
- Subscriptions and resource groups
- A Microsoft Entra tenant holds identities.
W
- Well-Architected frameworks
- Each provider publishes a framework of design principles grouped in pillars such as security, reliability, performance, cost and operations, with review questions for a workload.