Master cloud cost
without the magic.
In-depth lessons on FinOps, security and reliability, written by practitioners for the engineers, finance folks and execs who own the AWS bill. Plus a free in-browser audit of your own data.
Migrate EBS volumes from gp2 → gp3
Same baseline performance, ~20% cheaper, online change, the EBS upgrade with no downside.
Run modify-volume in-place. The instance keeps serving traffic; gp3’s baseline (3,000 IOPS) matches what your gp2 fleet was burning.
Start here · 23 guided paths
Follow a path, not just a lesson.
Each path is an ordered set of lessons that takes one outcome (a lower bill, a closed security gap) from first step to done.
Cut your storage bill
From gp2→gp3 and lifecycle policies to snapshot hygiene: squeeze the storage bill.
Trim your network spend
NAT gateways, idle load balancers and public IPv4: the quiet network line items.
Right-size your compute
Right-size, Graviton and idle instances: match spend to what you actually run.
Lock in your commitments
Savings Plans, Reserved Instances and reservations: stop paying on-demand for steady-state workloads.
Kill idle waste
Unattached volumes, idle endpoints, orphaned IPs and empty tables: delete what nothing uses.
Lock down access
Public S3, IAM hygiene, security groups and MFA: close the obvious doors.
Encrypt everything
Encrypt at rest and in transit across EBS, S3, RDS and load balancers.
Tighten your databases
Lock down RDS: private subnets, IAM auth, custom ports and logging.
Build in resilience
Multi-AZ, backups, restore testing and read replicas, to survive the bad day.
See what's happening
Flow logs, access logs, CloudTrail and scanning: see what's happening.
Get your alarms right
Coverage, dead alarms and noise: make CloudWatch alarms something you can actually trust.
Close Azure network exposure
Public database access, Key Vault private link and VM exposure: close the Azure doors.
Encrypt across Azure
Encrypt in transit and at rest across Azure SQL, Storage, Redis, VMs and Key Vault.
Harden Azure identity
MFA, least-privilege RBAC and managed identities across Entra and your subscriptions.
Turn on Azure detection
Turn on Defender plans, diagnostic logging and security alerting.
Manage Azure posture and patching
Patching, vulnerability assessment and endpoint protection across your Azure machines.
Harden Azure workloads
Harden App Service, Functions, AKS, container registry, SQL, Cosmos, APIM and messaging.
Right-size your Azure compute
Right-size and consolidate VMs, SQL, App Service, AKS and Cosmos to match real usage.
Lock in Azure commitments
Reservations and savings plans: stop paying pay-as-you-go for steady-state Azure workloads.
Cut your Azure storage bill
Blob tiering, snapshot hygiene, disk right-sizing and Log Analytics retention.
Kill idle Azure waste
Unattached disks, idle public IPs, empty load balancers and stopped-but-billing VMs.
Build in Azure resilience
Availability zones, geo-replication, backup and failover, to survive the bad day on Azure.
See what Azure is doing
VM insights, metric and log alerts, Application Insights and action groups.
Library · 4 topics
Pick a topic to dig into.
Cost
111 lessonsCut cloud spend without slowing teams down. Rightsize workloads, lock in commitments, kill idle waste, and turn raw billing data into decisions leadership trusts.
Compliance
96 lessonsMake audits boring. Continuous controls for SOC 2, HIPAA, PCI and ISO 27001: encryption, IAM hygiene, evidence collection, and the daily habits that keep you in scope.
Site Reliability
44 lessonsBuild systems that don't wake you up. SLOs that mean something, error budgets that change decisions, and the operational practices behind reliable cloud platforms.
Monitoring
17 lessonsSee your system clearly. Metrics, logs, traces and the questions worth asking. Instrument once, observe forever, and skip the dashboard sprawl.
Featured
The lessons your bill needs.
Migrate EBS volumes from gp2 to gp3
Same baseline performance, ~20% cheaper, online change, the EBS upgrade with no downside.
Right-size EC2 instance
Match instance types to actual workload: stop overpaying for unused capacity.
Delete unused NAT Gateways
A NAT Gateway with no traffic still bills $32/month: find the orphans and replace them with VPC endpoints where possible.
Free tool · in-browser
Drop your AWS exports.
Get a report in 12 seconds.
Cost Explorer, Cost Optimization Hub, Security Hub. We turn your CSVs into a ranked savings list, a security score, and a learning path tailored to your stack.
Tools & references
Free tools and reference libraries.
Security controls
Plain-English explainers for hundreds of AWS Security Hub and Azure Defender for Cloud controls, each mapped to a fix.
FinOps glossary
Definitions of the cloud cost and FinOps terms you will meet across the lessons.
Cost calculator
A region-aware monthly estimate for AWS and Azure, built from real list prices.
AWS vs Azure pricing
Like-for-like prices on the key primitives, tracked over time.
The platform
Want this every day, across every account?
emnode tracks cost, savings and security posture continuously across every account, turning each finding into a guided fix, with the same lessons baked into the product.