☁️ Cloud Core Services
Cloud core services are the fundamental building blocks that every cloud platform (AWS, Azure, GCP) provides. They replace traditional datacenter components — servers, storage arrays, firewalls, networks — with elastic, API‑driven, pay‑as‑you‑go services.
The concise takeaway: Cloud core services = compute + storage + networking + identity + databases + security + monitoring.
Everything else in the cloud is built on top of these primitives.
1. Compute Services
Section titled “1. Compute Services”Compute is the cloud equivalent of servers, VMs, and container runtimes.
Virtual Machines
Section titled “Virtual Machines”Cloud VMs replace physical servers.
Examples:
- AWS EC2
- Azure Virtual Machines
- GCP Compute Engine
Key features:
- Autoscaling
- Snapshots
- Managed disks
- Availability zones
Serverless Compute
Section titled “Serverless Compute”Runs code without provisioning servers.
Examples: AWS Lambda, Azure Functions, Cloud Functions.
Container Services
Section titled “Container Services”Managed container runtimes.
Examples: ECS, Azure Container Instances, Cloud Run.
2. Storage Services
Section titled “2. Storage Services”Cloud storage replaces SAN/NAS arrays, RAID systems, and file servers.
Object Storage
Section titled “Object Storage”Highly durable, scalable storage for files and blobs.
Examples: AWS S3, Azure Blob Storage, GCP Cloud Storage.
Use cases: backups, logs, media, static websites.
Block Storage
Section titled “Block Storage”Virtual disks attached to VMs.
Examples: EBS (AWS), Managed Disks (Azure), Persistent Disks (GCP).
File Storage
Section titled “File Storage”SMB/NFS file shares.
Examples: EFS, Azure Files, Filestore.
3. Virtual Networking
Section titled “3. Virtual Networking”Cloud networking mirrors datacenter networking but is software‑defined.
VPC / VNet
Section titled “VPC / VNet”Your private cloud network.
Includes:
- Subnets
- Routing tables
- NAT gateways
- Internet gateways
- Network ACLs
Load Balancers
Section titled “Load Balancers”Distribute traffic across VMs or containers.
Examples: ALB/NLB, Azure Load Balancer, GCP Load Balancing.
Firewalls & Security Groups
Section titled “Firewalls & Security Groups”Control inbound/outbound traffic at the instance or subnet level.
4. Identity & Access Management (IAM)
Section titled “4. Identity & Access Management (IAM)”IAM is the cloud’s security control plane.
Roles & Policies
Section titled “Roles & Policies”Define what users and services can do.
Service Principals / Managed Identities
Section titled “Service Principals / Managed Identities”Secure identity for applications and automation.
Key Management
Section titled “Key Management”Encryption keys, HSMs, secrets vaults.
IAM enforces least privilege across all cloud resources.
5. Managed Databases
Section titled “5. Managed Databases”Cloud platforms provide fully managed database engines.
Relational Databases
Section titled “Relational Databases”Examples:
- AWS RDS
- Azure SQL
- Cloud SQL
NoSQL Databases
Section titled “NoSQL Databases”Examples: DynamoDB, Cosmos DB, Firestore.
Caching Services
Section titled “Caching Services”Examples: ElastiCache, Azure Cache for Redis, Memorystore.
Managed databases remove patching, backups, and failover complexity.
6. Security & Governance
Section titled “6. Security & Governance”Cloud platforms include built‑in security services.
Cloud Security Posture Management
Section titled “Cloud Security Posture Management”Continuous configuration auditing.
Encryption Services
Section titled “Encryption Services”Encrypt data at rest and in transit.
Secrets & Certificate Management
Section titled “Secrets & Certificate Management”Store API keys, passwords, certificates.
WAF & DDoS Protection
Section titled “WAF & DDoS Protection”Protect applications at the edge.
7. Monitoring & Observability
Section titled “7. Monitoring & Observability”Cloud platforms provide full observability stacks.
Metrics & Dashboards
Section titled “Metrics & Dashboards”Examples: CloudWatch, Azure Monitor, Cloud Monitoring.
Logs & Traces
Section titled “Logs & Traces”Centralized logging for apps and infrastructure.
Alerts
Section titled “Alerts”Notify teams when thresholds or anomalies occur.
Why Cloud Core Services Matter
Section titled “Why Cloud Core Services Matter”They provide:
- Elastic scalability
- High availability
- Global reach
- Strong security baselines
- Faster provisioning
- Lower operational overhead
- Better disaster recovery
- Integration with SaaS and identity platforms
Cloud core services shift SysAdmins from hardware maintenance to platform engineering and automation.
Summary
Section titled “Summary”Cloud core services are the essential building blocks of cloud infrastructure:
- Compute
- Storage
- Networking
- IAM
- Managed databases
- Security
- Monitoring
They allow SysAdmins to operate infrastructure as scalable, automated, cloud‑native services instead of physical servers.