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VPC Architect
Design and visualize your 3-Tier VPC architecture with SRE insights
Configuration
RFC 1918 Private Ranges: 10.x.x.x is standard for large networks.
3 AZs offers higher availability (HA) but costs more in cross-zone traffic.
IP Math Breakdown
VPC CIDR
10.0.0.0/16
/16 means 32 - 16 = 16 bits for hosts. 2^16 = 65,536 IPs
Usable IPs
65,531
AWS reserves 5 IPs per subnet (Network, Router, DNS, Future, Broadcast)
Used IPs7,680
Spare Capacity57,856
Utilization11.7%
Architecture Visualization
Public Tier
Public Subnet 1a
10.0.0.0/24
251 usable IPs
us-east-1a
Public Subnet 1b
10.0.1.0/24
251 usable IPs
us-east-1b
Public Subnet 1c
10.0.2.0/24
251 usable IPs
us-east-1c
App Tier (Private)
App Subnet 1a
10.0.3.0/21
2043 usable IPs
us-east-1a
App Subnet 1b
10.0.11.0/21
2043 usable IPs
us-east-1b
App Subnet 1c
10.0.19.0/21
2043 usable IPs
us-east-1c
Data Tier (Isolated)
Data Subnet 1a
10.0.27.0/24
251 usable IPs
us-east-1a
Data Subnet 1b
10.0.28.0/24
251 usable IPs
us-east-1b
Data Subnet 1c
10.0.29.0/24
251 usable IPs
us-east-1c