Backed by ICPE '25 peer-reviewed research · Shaved Ice algorithm

Stop overpaying
for AWS compute.

Cloud-9 scores every EC2 spot instance on price, interruption risk, and hardware generation — then tells you exactly what to buy and when to commit.

No AWS account setup. No API keys. Free to start.

Start optimizing — no signupCreate free account
1,327
instance types tracked
76.9%
maximum savings found
2,300+
live price data points
7
optimization tools
0
AWS credentials needed

Features

Seven tools. One optimization stack.

From real-time spot prices to ML-driven forecasts and commitment sizing — everything your team needs to make intelligent infrastructure decisions.

Free01

Find Cheapest Spot

Filter 1,300+ instance types by vCPU and memory requirements. Get price-ranked results with real interruption frequency data from AWS Spot Advisor.

→ Instant results, no configuration

Free02

Best Value Score

A composite score that balances price, interruption probability, and hardware generation. Not just the cheapest — the smartest choice.

→ Multi-factor ranking algorithm

Free03

ML Price Predictions

Short-horizon spot price forecasts from a trained model built on historical snapshots. Time your launches around predicted dips.

→ Trained on 2,300+ price points

Free04

Price Trends

Historical price charts across regions and availability zones. Spot seasonal patterns and volatility before they affect your compute budget.

→ Multi-region, multi-AZ views

Pro05

Commitment Advisor

The Shaved Ice algorithm (ICPE '25) sizes your EC2 Savings Plan commitment to capture maximum savings without locking in more than you can use.

→ Upload your own usage CSV

Pro06

Time Shifting

Find the cheapest 6-hour window in a 24-hour cycle for batch workloads. Schedule jobs when prices are statistically lowest, automatically.

→ Cost-aware batch scheduling

How it works

From specs to savings in seconds.

01

Set your requirements

Enter minimum vCPUs and memory. No AWS credentials. No account needed. Just your compute specs.

02

Get ranked recommendations

Cloud-9 scores every matching instance on price, interruption risk, and hardware generation simultaneously.

03

Optimize your commitment

Use the Commitment Advisor to right-size your Savings Plan. Upload your usage history or use the built-in demo.

Research

Built on peer-reviewed algorithms

Cloud-9 implements the Shaved Ice algorithm from research presented at ICPE '25 — the ACM/SPEC International Conference on Performance Engineering.

The algorithm solves the commitment sizing problem: how much of your compute budget to lock into a Savings Plan to maximize savings without overcommitting to usage you won't hit.

Interruption-aware scoring
Every recommendation weights interruption frequency from AWS Spot Advisor, not just price.
Hardware generation scoring
Penalizes older hardware generations so you don't save money at the cost of performance.
Short-horizon ML forecasting
A trained model predicts near-term price movements so you can time spot launches intelligently.

Start cutting costs today.

No AWS credentials. No setup. The core tools are free forever. Upgrade when you need Commitment Advisor or Time Shifting.

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