AWS Architecture Diagram

What this diagram shows

An AWS architecture diagram visualises how cloud infrastructure components connect and interact within Amazon Web Services. It typically shows compute instances (EC2), storage systems (S3), databases (RDS, DynamoDB), networking layers (VPC, load balancers), and supporting services arranged to reflect data flow and dependencies. The diagram progresses from client entry points through network infrastructure to backend services, making it clear how requests route through the system and where data is processed, stored, and retrieved. This enables teams to understand deployment topology, identify bottlenecks, and communicate infrastructure decisions to stakeholders.

Key components

• VPC (Virtual Private Cloud) — Defines isolated network boundaries and subnets where all AWS resources are deployed and traffic is controlled.
• EC2 Instances — Provide compute capacity by running application servers, web servers, or batch processing workloads.
• Elastic Load Balancer — Distributes incoming traffic across multiple EC2 instances to ensure availability and handle scaling.
• S3 (Simple Storage Service) — Stores unstructured data such as static assets, backups, logs, or media files with durable persistence.
• RDS / DynamoDB — Manages relational or NoSQL databases respectively for transactional data and application state.
• Auto Scaling Group — Automatically adds or removes EC2 instances based on demand to maintain performance under variable load.
• CloudFront / CDN — Caches and delivers content globally at edge locations to reduce latency for end users.

When to use it

Use this diagram when designing new AWS deployments, documenting existing infrastructure, planning migrations from on-premises systems, or communicating architecture to development teams and stakeholders. It works well for systems spanning multiple availability zones, microservices topologies, or hybrid setups. It is particularly useful in design reviews, compliance documentation, and capacity planning discussions where visual clarity about component placement and data routes is essential.

Common mistakes

• Omitting security layers such as security groups, NACLs, or WAF, making the diagram appear simpler than the actual protected system.
• Showing only one availability zone or subnet when the real architecture spans multiple zones for redundancy and failover.
• Drawing arrows without indicating data direction or protocol type, leaving ambiguity about how services actually communicate.

Adapting it to your system

Start by identifying your entry point (API Gateway, CloudFront, or direct VPC access) and draw it at the top. Map your VPC structure with public and private subnets clearly separated. Place load balancers and NAT gateways in public subnets, then arrange EC2 or container groups in private subnets. Connect databases and caches below compute, and attach S3 buckets or external services to the side. Label each connection with the protocol or service type. Adjust the number of instances, regions, and services to match your actual environment rather than copying generic examples wholesale.