High Availability - is the ability to keep services up and running for long periods of time, with very little downtime., Scalability - is the ability to increase or decrease resources for any given workload., Elasticity - is the ability to automatically or dynamically increase or decrease resources as needed., Agility - is the ability to respond to change rapidly based on changes to market or environment., Fault tolerance  - is the ability to remain up and running even in the event of a component (or service) no longer functioning, Disaster recovery - not only having reliable backups of important data, but it also the cloud infrastructure can replicate your application’s resources in an unaffected region so that your data is safe and your application availability isn’t impacted., Capital Expenditures (CapEx)   - is the upfront spending of money on physical infrastructure. e.g. server cost, storage cost, DataCenter Infra cost etc, Operational Expenditure (OpEx) - is spending money on services or products now and being billed for them now. e.g. software license, hosting expense, electric bills etc, Economies Economies of scale - is the ability to reduce costs and gain efficiency when operating at a larger scale in comparison to operating at a smaller scale., Consumption-based model - allows end-users only to pay for the resources that they use, Infrastructure as a service (IaaS) - is an instant computing infrastructure, provisioned, and managed over the internet. IaaS quickly scales up and down with demand, letting you pay only for what you use., Platform as a service (PaaS) - You manage the applications and services you develop, and the cloud service provider typically manages everything else, Software as a service (SaaS) - lets you run application code without creating, configuring, or maintaining a server, Function as a Service (FaaS) - provides a runtime environment to execute code, written in any language the user is comfortable, Cloud Cloud Computing   - is the delivery of computing services over the internet (the cloud), enabling for faster innovation, flexibility to the resources, and economies of scale., Private Cloud - cloud service is accessible only to a single organization, private cloud provides the greatest degree of ownership and control. With Private Cloud, you will have more control of physical resources, which brings more ownership to users., Public Cloud - is a computing service offered by third-party providers (eg. Azure) over the public Internet, making them available to anyone who wants to use or purchase them. Public cloud provides the least degree of ownership as physical infrastructure is owned and managed by public cloud provides (e.g. Azure or AWS), Hybrid Cloud - is a computing environment that combines public cloud and private cloud by allowing data and applications to be shared between them. Hybrid cloud provides less degree of ownership comparing to the private cloud., Low Latency - describes a computer network that is optimized to process a very high volume of data messages with minimal delay (latency)., Serverless Model - lets you run application code without creating, configuring, or maintaining a server., Region - is a geographical area on the planet containing at least one, but potentially multiple datacenters that are in close proximity and networked together with a low-latency network., Geographies - typically containing two or more regions that preserve data residency and compliance boundaries, Availability Zone - are physically separate locations with their own power, cooling, and networking to provide additional fault tolerance., Availability Set - ensures your application remains online if a high-impact maintenance event is required which is made up of Update domains (UD) and Fault domains (FD)., Resource Group - allows you to logically group Azure Resources together and created under subscriptions., Subscription - s a logical unit of Azure services that links to an Azure account., Management Groups - are containers that help you manage access, policy, and compliance for multiple subscriptions.,

Azure - Cheat Sheet (Part 1) - Cloud Concepts

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