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Cloud Computing Fundamentals · Module 6 of 10

Cloud networking

Virtual networks, subnets, load balancers and CDNs connect cloud apps.

📖 Key ideas

  1. A VPC / VNet is your private network in the cloud.
  2. Public subnets reach the internet; private subnets hide databases.
  3. Security groups act as virtual firewalls on instances.
  4. Load balancers spread traffic across servers.
  5. A CDN caches content near users for speed.
💡 Real-life example: Like a gated campus: a main gate (load balancer), roads (subnets), guards at each building (security groups).
VPCPrivate virtual network in the cloud
SubnetA range of addresses inside a VPC
Security groupInstance-level virtual firewall
Load balancerSpreads traffic across servers