AWS Well-Architected Review Explained

If your business runs on AWS, a Well-Architected Review is one of the highest-value exercises you can invest in. It identifies security gaps, cost waste, reliability risks, and performance bottlenecks across your entire cloud environment, and gives you a clear roadmap to fix them. Here is everything you need to know about what it is, how it works, and when to get one.

What Is a Well-Architected Review?

A Well-Architected Review is a structured assessment of your AWS environment against the AWS Well-Architected Framework. Developed by AWS Solutions Architects, the framework represents over a decade of best practices collected from thousands of customer architectures. The review evaluates your workloads across six pillars and produces a prioritized list of findings with specific remediation steps. Think of it as a comprehensive health check for your cloud infrastructure.

Unlike a general audit, a Well-Architected Review follows a proven methodology with specific questions, measurable outcomes, and risk ratings. The result is not a vague list of suggestions but a concrete action plan ranked by business impact and effort.

The 6 Pillars of the Well-Architected Framework

The framework evaluates your architecture across six distinct areas:

1. Operational Excellence

How well do you run and monitor your systems? This pillar examines your deployment processes, incident response procedures, observability, and how you learn from operational failures. Key areas include infrastructure-as-code adoption, runbook documentation, and automated alerting.

2. Security

How do you protect your data, systems, and assets? The security pillar covers identity management, detective controls, infrastructure protection, data protection, and incident response. We evaluate IAM policies, encryption at rest and in transit, network segmentation, and logging configurations.

3. Reliability

Can your system recover from failures and meet demand? This pillar assesses your backup strategy, disaster recovery plan, fault tolerance, and how you handle change. We look at multi-AZ deployments, auto-scaling configurations, RTO/RPO targets, and tested recovery procedures.

4. Performance Efficiency

Are you using the right resources for your workload? This pillar examines compute selection, storage choices, database configurations, and networking setup. We identify over-provisioned resources, suboptimal instance types, and missed opportunities like Graviton processors or purpose-built databases.

5. Cost Optimization

Are you eliminating waste and using the most cost-effective resources? The cost pillar evaluates expenditure awareness, cost-effective resource selection, matching supply to demand, and commitment-based pricing strategies. We look at unused resources, right-sizing opportunities, and Savings Plan coverage.

6. Sustainability

Are you minimizing the environmental impact of your cloud workloads? The newest pillar examines region selection, efficient resource utilization, managed services adoption, and data lifecycle management. Optimizing for sustainability often aligns with cost optimization since both prioritize efficiency.

Who Needs a Well-Architected Review?

Any business running production workloads on AWS benefits from a review. However, it is especially critical if you inherited an AWS environment through an acquisition, if your cloud infrastructure grew organically without formal architecture planning, if you are preparing to scale significantly, or if you have never had an independent review of your setup. Businesses spending $5,000 or more per month on AWS almost always find actionable improvements worth multiples of the review cost.

How the Process Works

A typical Well-Architected Review follows four phases:

Phase 1: Read-Only Access and Discovery. We request read-only IAM access to your AWS account. No changes are made. We use automated tools and manual inspection to inventory your resources, configurations, and spending patterns. This takes 2-3 business days depending on environment complexity.

Phase 2: Assessment Against the Framework. We evaluate each resource, configuration, and architectural decision against the Well-Architected Framework questions. We document findings, assign risk ratings (High, Medium, Low), and estimate the effort required for remediation.

Phase 3: Report Delivery. You receive a comprehensive report with an executive summary, detailed findings organized by pillar, risk ratings, and specific remediation steps. Each finding includes the current state, the risk it poses, and exactly what needs to change.

Phase 4: Walkthrough and Planning. We schedule a live session to walk through the findings, answer questions, and help you prioritize remediation based on your business context, budget, and timelines.

What You Get From a Review

A completed Well-Architected Review delivers:

• Prioritized findings ranked by risk severity and business impact
• Risk ratings (High, Medium, Low) for every identified issue
• Remediation roadmap with specific steps, estimated effort, and suggested sequencing
• Cost savings opportunities with projected monthly savings for each recommendation
• Security gap analysis identifying vulnerabilities and compliance risks
• Architecture diagrams documenting your current state and recommended target state

Common Findings We See

After conducting dozens of reviews, certain patterns appear consistently:

Security gaps: Root account without MFA, overly permissive IAM policies, unencrypted data at rest, security groups allowing 0.0.0.0/0 on management ports, CloudTrail not enabled in all regions, and missing GuardDuty activation.

Cost waste: Oversized instances running at 10-20% CPU utilization, no Savings Plan coverage, unattached EBS volumes accumulating charges, outdated snapshots consuming storage, and NAT Gateway data transfer charges from misconfigured routing.

Single points of failure: Single-AZ RDS instances without Multi-AZ failover, applications dependent on a single EC2 instance, no auto-scaling configured, and load balancers pointing to single targets.

Missing backups: No automated backup strategy, untested restore procedures, RDS automated backups with insufficient retention periods, and no cross-region backup replication for disaster recovery.

How Forti365 Conducts Reviews

At Forti365, we combine automated tooling with hands-on expert analysis. Our automated scans catch configuration drift and common misconfigurations, but the real value comes from an experienced AWS architect examining your architecture decisions in the context of your business requirements. We do not just flag issues. We explain why they matter to your specific situation and how to fix them in a way that fits your team's capacity and budget. Every review is conducted by an AWS-certified solutions architect with real-world production experience.

When to Get a Well-Architected Review

The best times to schedule a review include:

• Before scaling: Identify weaknesses before they become expensive problems at scale
• After an acquisition: Understand what you inherited and what risks exist
• Annually: Environments drift over time as teams make changes without formal review
• Before a compliance audit: Identify and fix gaps before auditors find them
• After a major incident: Understand root causes and prevent recurrence
• When costs spike unexpectedly: Find the source and implement governance

How Often Should You Do One?

AWS recommends reviewing your workloads at least annually, and we agree. Cloud environments change constantly. New services launch, team members make configuration changes, and workload patterns evolve. An annual review ensures you catch drift before it creates risk. For fast-growing businesses or those in regulated industries, a semi-annual cadence provides tighter oversight and faster identification of emerging issues.