[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"lesson-cloud-computing-fundamentals-security-and-reliability-reliability-and-operations-en":3,"cheat-sheet---en":3,"domain-info---en":3,"prev-cloud-computing-fundamentals-security-and-reliability-reliability-and-operations-en":3,"next-cloud-computing-fundamentals-security-and-reliability-reliability-and-operations-en":3,"topic-info-cloud-computing-fundamentals-security-and-reliability-reliability-and-operations-en":4,"course-lesson-metadata-cloud-computing-fundamentals-en":59},null,{"meta":5,"body":8},{"title":6,"description":7},"Reliability and Operations","High availability, fault tolerance, scaling, backups, disaster recovery, monitoring, and what an SLA actually promises.",{"type":9,"value":10,"toc":52},"minimark",[11,15,20,42,46,49],[12,13,14],"p",{},"A perfectly secure system that goes down still fails everyone relying on it. This topic turns from who protects your cloud resources to how they stay running: the redundancy patterns that survive a hardware failure, the automation that matches capacity to demand, the plan for when a failure is bigger than redundancy alone can absorb, and the way teams actually find out something went wrong.",[16,17,19],"h2",{"id":18},"what-this-topic-covers","What This Topic Covers",[21,22,23,27,30,33,36,39],"ul",{},[24,25,26],"li",{},"high availability and fault tolerance, and why a brief automated recovery and zero visible interruption are 2 different, differently priced guarantees",[24,28,29],{},"active-active and active-passive redundancy, and how spreading compute and databases across Availability Zones removes a single point of failure",[24,31,32],{},"scalability and elasticity, and why a system's ability to grow is not the same as it automatically growing and shrinking to match real-time demand",[24,34,35],{},"Auto Scaling group mechanics: minimum, desired, and maximum capacity, and target tracking, step, and scheduled scaling policies",[24,37,38],{},"Recovery Time Objective and Recovery Point Objective, and the 4 disaster recovery strategies, from backup and restore through multi-site active/active, that trade cost for recovery speed",[24,40,41],{},"monitoring with metrics, logs, and alarms, and the difference between an SLI, an SLO, and an SLA",[16,43,45],{"id":44},"why-it-matters","Why It Matters",[12,47,48],{},"Every pattern in this topic answers a version of the same question: what happens when something fails anyway. Hardware fails at 2am regardless of how good the code is, so multi-AZ redundancy and the high-availability-versus-fault-tolerance distinction decide whether that failure is invisible or just survivable. Demand never stays flat, so scalability and elasticity decide whether a team pays for its worst day year-round or only when it actually arrives. Redundancy inside a Region eventually meets a failure bigger than it was built for, which is exactly what Recovery Time Objective, Recovery Point Objective, and a tested disaster recovery strategy exist to bound.",[12,50,51],{},"None of it means anything without a way to find out a failure happened and a way to state, in numbers, how reliable a system actually was. That is what monitoring and SLAs close the topic with: metrics and alarms that catch a problem in minutes instead of from a customer complaint, and a clear-eyed read of what a provider's SLA compensates and what it never covers. Together, this topic gives you the vocabulary a cloud job interview and this course's certification path both expect: not just how to build a resilient system, but how to prove, with numbers, that it stayed that way.",{"title":53,"searchDepth":54,"depth":54,"links":55},"",3,[56,58],{"id":18,"depth":57,"text":19},2,{"id":44,"depth":57,"text":45},{"lessons":60,"cheatSheets":199,"mockTestsAvailable":69},[61,66,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,135,139,143,147,151,155,159,163,167,171,175,179,183,187,191,195],{"path":62,"title":63,"isFree":64,"description":65},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/01-cloud-computing-basics/01-why-cloud-computing-exists","Why Cloud Computing Exists",true,"The procurement delays, idle hardware, and upfront costs that made traditional IT painful, and the 3 technologies that had to converge before the cloud could replace it.",{"path":67,"title":68,"isFree":69,"description":70},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/01-cloud-computing-basics/02-what-is-cloud-computing","What Is Cloud Computing?",false,"The official NIST definition of cloud computing, unpacked phrase by phrase, and the test it gives you for telling a real cloud service apart from a data center someone just calls one.",{"path":72,"title":73,"isFree":69,"description":74},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/01-cloud-computing-basics/03-virtualization-explained","Virtualization Explained","How a hypervisor splits one physical server into many isolated virtual machines, the difference between Type 1 and Type 2 hypervisors, and why virtualization alone does not make a system a cloud.",{"path":76,"title":77,"isFree":69,"description":78},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/01-cloud-computing-basics/04-five-characteristics-of-cloud-computing","The 5 Characteristics of Cloud Computing","A deep dive into the 5 NIST essential characteristics, on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service, and how to use them as a test for whether a service is truly cloud computing.",{"path":80,"title":81,"isFree":64,"description":82},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/02-cloud-deployment-models/01-public-and-private-clouds","Public and Private Clouds","Who owns the hardware and who else can share it: the NIST definitions of public, private, and community cloud, and how to choose between them based on cost, control, and compliance.",{"path":84,"title":85,"isFree":69,"description":86},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/02-cloud-deployment-models/02-hybrid-and-multi-cloud","Hybrid and Multi-Cloud","How organizations connect private infrastructure to the public cloud, spread workloads across more than one provider, and why hybrid cloud and multi-cloud solve different problems despite getting used interchangeably.",{"path":88,"title":89,"isFree":64,"description":90},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/03-cloud-economics/01-capex-vs-opex","CapEx vs OpEx","Why buying a server and renting one from a cloud provider hit a company's books in completely different ways, and why a monthly invoice is not automatically the same thing as OpEx.",{"path":92,"title":93,"isFree":69,"description":94},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/03-cloud-economics/02-cloud-pricing-models","Cloud Pricing Models","On-demand, reserved and committed-use, and spot pricing across AWS, Azure, and Google Cloud: the discount each one trades for a commitment, and which workload actually fits each one.",{"path":96,"title":97,"isFree":69,"description":98},"/courses/cloud-computing-fundamentals/en/domains/01-cloud-concepts-and-economics/03-cloud-economics/03-total-cost-of-ownership","Total Cost of Ownership","Why the number on a cloud invoice, or a hardware quote, is never the full cost of running a workload, and how to compare cloud and on-premises costs honestly over several years.",{"path":100,"title":101,"isFree":64,"description":102},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/01-cloud-service-models/01-infrastructure-as-a-service","Infrastructure as a Service (IaaS)","The service model that hands you raw compute, storage, and networking and leaves the operating system, runtime, and application on your side of the line, with AWS EC2, Azure Virtual Machines, and Google Compute Engine as the products that deliver it.",{"path":104,"title":105,"isFree":69,"description":106},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/01-cloud-service-models/02-platform-as-a-service","Platform as a Service (PaaS)","The service model that takes the operating system and runtime off your plate, so you push code and the platform runs it, with AWS Elastic Beanstalk, Heroku, and Google App Engine as the products that deliver it.",{"path":108,"title":109,"isFree":69,"description":110},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/01-cloud-service-models/03-software-as-a-service","Software as a Service (SaaS)","The service model where the provider runs the entire application and you just use it, from Gmail to Salesforce to Slack, and the multi-tenant architecture that makes running one application for millions of customers affordable.",{"path":112,"title":113,"isFree":69,"description":114},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/01-cloud-service-models/04-iaas-vs-paas-vs-saas","IaaS vs. PaaS vs. SaaS","The full responsibility split across all 3 service models side by side, the keyword cues that identify each one in a scenario, and the classic trap that catches learners who assume moving up the stack always means an upgrade.",{"path":116,"title":117,"isFree":64,"description":118},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/02-core-cloud-services/01-regions-and-availability-zones","Regions and Availability Zones","How cloud providers organize their global infrastructure into regions and availability zones, and why that structure is the reason a well-built cloud application can survive a data center fire.",{"path":120,"title":121,"isFree":69,"description":122},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/02-core-cloud-services/02-compute-services","Compute Services","The actual compute options behind IaaS and PaaS: how virtual machines are sized and priced, what managed compute platforms take off your plate, and where containers and serverless functions sit on the same spectrum.",{"path":124,"title":125,"isFree":69,"description":126},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/02-core-cloud-services/03-storage-services","Storage Services","Object, block, and file storage: how each one organizes data differently, which workloads each one actually fits, and the exam-favorite mistake of treating them as interchangeable.",{"path":128,"title":129,"isFree":69,"description":130},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/02-core-cloud-services/04-databases-in-the-cloud","Databases in the Cloud","What a managed database service actually takes off your plate, how relational and NoSQL databases model data differently, and which one fits which part of a real application.",{"path":132,"title":133,"isFree":69,"description":134},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/02-core-cloud-services/05-cloud-networking-basics","Cloud Networking Basics","How a virtual private cloud, subnets, security groups, network ACLs, and a load balancer work together to get a user's request safely from the internet to a private database, and nowhere it should not go.",{"path":136,"title":137,"isFree":64,"description":138},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/03-modern-cloud-architectures/01-serverless-computing","Serverless Computing","What 'serverless' actually means, how a function scales from zero to thousands of requests and back, the real cost math behind it, and where its limits sit.",{"path":140,"title":141,"isFree":69,"description":142},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/03-modern-cloud-architectures/02-containers-and-microservices","Containers and Microservices","What a container actually packages, why splitting a monolith into microservices changes how a team ships and scales, and what an orchestrator like Kubernetes adds once you have more containers than you can manage by hand.",{"path":144,"title":145,"isFree":69,"description":146},"/courses/cloud-computing-fundamentals/en/domains/02-cloud-services-and-architecture/03-modern-cloud-architectures/03-devops-and-infrastructure-as-code","DevOps and Infrastructure as Code","How development and operations merged into one continuous practice, what each stage of a CI/CD pipeline catches, and how describing infrastructure as code, instead of clicking through a console, keeps environments consistent and reproducible.",{"path":148,"title":149,"isFree":64,"description":150},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/01-cloud-security/01-shared-responsibility-model","The Shared Responsibility Model","Where your cloud provider's security duties end and yours begin, and why that boundary moves depending on whether you're using IaaS, PaaS, or SaaS.",{"path":152,"title":153,"isFree":69,"description":154},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/01-cloud-security/02-identity-and-access-management","Identity and Access Management","How the cloud confirms who you are, decides what you're allowed to do, and the practices, roles, least privilege, and MFA, that keep a single stolen credential from becoming a full account breach.",{"path":156,"title":157,"isFree":69,"description":158},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/01-cloud-security/03-encryption-and-data-protection","Encryption and Data Protection","How encryption at rest and encryption in transit protect data at different points in its journey, how key management keeps encrypted data useless to anyone without permission, and where encryption's protection ends.",{"path":160,"title":161,"isFree":69,"description":162},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/01-cloud-security/04-governance-and-compliance","Governance and Compliance","How cloud governance sets an organization's own rules for resource use, how compliance proves those rules satisfy an external framework or regulation, and where a provider's certifications end and a customer's own evidence has to begin.",{"path":164,"title":165,"isFree":64,"description":166},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/02-reliability-and-operations/01-high-availability-and-fault-tolerance","High Availability and Fault Tolerance","Why a system that recovers from a failure in under 2 minutes and a system that never blinks at all are solving the same problem with 2 different budgets, and the redundancy patterns cloud teams use to build each.",{"path":168,"title":169,"isFree":69,"description":170},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/02-reliability-and-operations/02-scalability-and-elasticity","Scalability and Elasticity","Why a system that can grow and a system that grows and shrinks itself automatically are 2 different skills, and how an Auto Scaling group's capacity settings and scaling policies deliver the second one.",{"path":172,"title":173,"isFree":69,"description":174},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/02-reliability-and-operations/03-backup-and-disaster-recovery","Backup and Disaster Recovery","What Recovery Time Objective and Recovery Point Objective actually bound, and the 4 disaster recovery strategies cloud teams choose between when redundancy inside a region was not enough.",{"path":176,"title":177,"isFree":69,"description":178},"/courses/cloud-computing-fundamentals/en/domains/03-security-and-reliability/02-reliability-and-operations/04-monitoring-and-slas","Monitoring and SLAs","How metrics, logs, and alarms tell you a system is failing, what an uptime percentage costs in real downtime, and what a cloud provider's SLA actually promises when it doesn't hold.",{"path":180,"title":181,"isFree":64,"description":182},"/courses/cloud-computing-fundamentals/en/domains/04-cloud-careers-and-certifications/01-working-in-the-cloud/01-cloud-job-roles","Cloud Job Roles","The cloud job titles teams actually hire for, what each one owns day to day, and how to tell a Cloud Engineer from a Cloud Architect, a DevOps Engineer, an SRE, and a cloud security specialist.",{"path":184,"title":185,"isFree":69,"description":186},"/courses/cloud-computing-fundamentals/en/domains/04-cloud-careers-and-certifications/01-working-in-the-cloud/02-hands-on-practice-with-free-tiers","Hands-On Practice with Free Tiers","What AWS, Azure, and Google Cloud actually give you for free, the difference between a time-limited trial credit and an Always Free service, and how to practice without risking a surprise bill.",{"path":188,"title":189,"isFree":64,"description":190},"/courses/cloud-computing-fundamentals/en/domains/04-cloud-careers-and-certifications/02-certification-paths/01-why-get-certified","Why Get Certified","What a cloud certification actually proves, the career outcomes certified professionals report in independent survey data, and why a certification works best paired with hands-on practice, not in place of it.",{"path":192,"title":193,"isFree":69,"description":194},"/courses/cloud-computing-fundamentals/en/domains/04-cloud-careers-and-certifications/02-certification-paths/02-choosing-your-first-cloud-certification","Choosing Your First Cloud Certification","How the AWS, Microsoft Azure, and Google Cloud foundational certifications compare on cost, format, and content, why CompTIA Cloud+ is not usually a first certification, and a decision framework for picking the right starting point.",{"path":196,"title":197,"isFree":69,"description":198},"/courses/cloud-computing-fundamentals/en/domains/04-cloud-careers-and-certifications/02-certification-paths/03-your-cloud-learning-roadmap","Your Cloud Learning Roadmap","A concrete, phased study plan from finishing this course to passing the AWS Certified Cloud Practitioner exam, built entirely from free official resources, plus which certification to target next once you pass.",[200,201,202,203],"cloud-concepts-and-economics","cloud-services-and-architecture","security-and-reliability","cloud-careers-and-certifications"]