Coverage map
Every instance, every reservation, one view. See exactly what's reserved, what's on-demand, and what expires next month.
Reserved Instances, managed
Stop paying on‑demand for a fleet that never leaves.
Reserver connects to your AWS accounts, matches every reservation you own to what's actually running — RDS, ElastiCache, EC2 — and tells you exactly what to buy next. Then buying it is a button. Or a rule.
read-only IAM role · first recommendation in minutes · flat pricing
Recommendation · Nº 0042db.r6g.xlarge ×53-year · partial upfront · us-east-1 · Multi-AZ
−$24,800/yrReserved
The standing discount
AWS will knock the price down.
You just have to commit.
Reserved Instances are the biggest, most boring discount in cloud — and the most under-used, because claiming them means reconciling three consoles, a spreadsheet, and a calendar reminder that nobody owns. So steady workloads sit on the on-demand rate for years. That's not flexibility. That's a convenience fee.
up to 72%Amazon EC2max Reserved Instance discount vs on-demandup to 69%Amazon RDSmax Reserved Instance discount vs on-demandup to 55%Amazon ElastiCachemax reserved node discount vs on-demand
Discount ceilings per AWS published pricing; your actual rates depend on instance class, term, and payment option — Reserver shows you the exact math for your fleet.
The silent failure mode
A lapsed reservation doesn't warn you.
It just costs more — every hour.
Reserved Instances don't auto-renew. At term end, the instance keeps running exactly as before — but the price silently reverts to the on-demand rate, immediately, and stays there until someone notices. Nothing in the AWS console interrupts you to say so.
+$134unnoticed for 10 days
+$403unnoticed for 30 days
…and that's one reservation.Whether you're covering a handful of reservations or thousands across many accounts, the meter runs the same. Reserver never misses a term, at one flat price that scales with you.
What's it worth
Spend a little. Miss nothing.
Pick your size, or drag the slider to your own AWS compute spend. It's the same conservative math Reserver runs against your account — not a best case.
Your estimate
$105,300estimated annual savings
7 dayspayback period
59×return on Reserver's cost
A renewal missed by 14 days on one reservation ≈ $951 — a single prevented miss pays for about 6 months of Reserver.
See my real numbers →Estimates. Actual savings depend on instance class, term, payment option, and how much of your fleet is steady — Reserver shows the exact math for your account.
Proof, not promises
Same discount. Every size.
Three real accounts, anonymized at their own request, priced at their own AWS rates — from a single-account startup to a 40-account enterprise footprint.
Startup
RDS · ElastiCache · EC2 · 1 account
One missed renewal, one never-reserved tier — both quantified.
$2,195found, at their own rates
Read the study →Growth
RDS · ElastiCache · EC2 · 6 regions
The money wasn't lost to ignorance — it leaked in the seams between manual reviews.
≈$60k/yrfound, at their own rates
Read the study →Enterprise
RDS · ElastiCache · EC2 · 40 accounts · AWS Organizations
The size where every account looks fine alone, and the money hides in the seams between them.
$250k/yrfound, at their own rates
Read the study →How it works
From IAM role to reserved in an afternoon.
- 01
Connect
Grant a read-only IAM role. Describe/List calls only — Reserver can see your fleet, not change it.
- 02
Scan
Reserver inventories every running RDS, ElastiCache, and EC2 instance — and every reservation you already own.
- 03
Match
Each reservation is matched against a running instance. What's left is your gap: unreserved capacity and expiring terms.
- 04
Act
Get a concrete recommendation with the math shown. Buy in one click, put it on a schedule, or just get told — your channel, your call.
Trust
What we can, and can't, touch in your account.
Two roles, each scoped to exactly one job. Neither can touch a running workload.
Read-only
Watch role
9 named read-only calls · rds/elasticache/ec2 Describe · cloudwatch:GetMetricData
Can
- Read instance shapes, regions, tags, and reservation terms
- Sample utilization metrics to size recommendations
Can't
- Start, stop, modify, or delete anything
- Read your database, cache, or application data
Scoped purchase
Autopilot role
rds/elasticache/ec2:PurchaseReserved*Offering
Can
- Buy reservations for RDS, ElastiCache, and EC2 — with your approval
- Log every purchase: who, what, when
Can't
- Touch running workloads, your data, or networking
- Buy anything on watch-only plans
Confused-deputy protectionNo agent in your VPCRevoke anytime
StartupRead-only peace of mind — connect the Watch role and see your coverage with nothing able to touch your fleet.
GrowthTurn on Autopilot with approvals and a full audit trail as you automate — you decide how much runs on its own.
EnterpriseSSO/SAML, AWS Organizations isolation, and custom approval chains for procurement across thousands of reservations.
Pre-launch — SOC 2 / ISO 27001 are on the roadmap; we'd rather say that plainly.
What you get
Full command of your reserved capacity.
Recommendations with the math
Not "consider an RI." A line item: instance class, term, payment option, break-even date, dollars saved per year.
Purchasing that isn't a scavenger hunt
One place to buy reservations for RDS, ElastiCache, and EC2 — instead of three consoles with three different vocabularies.
Renewal autopilot
Expiring reservations re-bought on your terms before the rate snaps back to list price. The calendar reminder, retired.
Scheduled & rule-based purchases
Buy on the first of the quarter. Or reserve any instance that survives 90 days — because by then, it isn't going anywhere.
Your channel, not another inbox
Email, Slack, or SMS. On the Watch plan Reserver only ever notifies — you stay the one who presses the button.
Every feature in detail →
Prefer to see it? Take the product tour →
Automation
Set the policy.
Reserver keeps you covered.
Coverage decays by default — instances launch, terms lapse, teams move on. Reserver's rules push back: renewals re-bought before they expire, purchases on the dates you pick, and age-based rules that reserve anything that's clearly staying. Every rule can require a human's approval first, and every purchase is logged — who, what, when, why.
Dec 14renewal
cache.r6g.large ×2current reservation expires Dec 15Jan 01scheduled
db.m6g.2xlarge ×1quarterly purchase windowon day 90age rule
m7g.xlarge ×3instances older than 90 days get reservedvs. the field
Everyone else leaves the discount unclaimed.
Doing nothing costs the most of all — the discount just sits unclaimed while reservations quietly lapse to list price. A spreadsheet and a calendar reminder catch some of it, until someone's on leave. Reserver never misses one, at a flat monthly price that never takes a cut of what you save.
| Capability | Spreadsheet + calendar | AWS Cost Explorer | %-of-savings tools | Reserver |
|---|---|---|---|---|
| Matches reservations to what's actually running | ✗ | ~ | ~ | ✓ |
| Flags expiries before they lapse | ~ | ✗ | ~ | ✓ |
| Re-buys renewals automatically | ✗ | ✗ | ✗ | ✓renewal autopilot |
| Shows the exact purchase math | ✗ | ~ | ~ | ✓term, payment, break-even, $/yr |
| Buys reservations for you | ✗ | ✗ | ~ | ✓RDS, ElastiCache, EC2 — one place |
| One coverage view across many accounts | ~ | ~ | ~ | ✓AWS Organizations |
| Price stays flat as you grow | ✓ | ✓ | ✗ | ✓never a cut of your savings |
Spreadsheet + calendar
- ✗Matches reservations to what's actually running
- ~Flags expiries before they lapse
- ✗Re-buys renewals automatically
- ✗Shows the exact purchase math
- ✗Buys reservations for you
- ~One coverage view across many accounts
- ✓Price stays flat as you grow
AWS Cost Explorer
- ~Matches reservations to what's actually running
- ✗Flags expiries before they lapse
- ✗Re-buys renewals automatically
- ~Shows the exact purchase math
- ✗Buys reservations for you
- ~One coverage view across many accounts
- ✓Price stays flat as you grow
%-of-savings tools
- ~Matches reservations to what's actually running
- ~Flags expiries before they lapse
- ✗Re-buys renewals automatically
- ~Shows the exact purchase math
- ~Buys reservations for you
- ~One coverage view across many accounts
- ✗Price stays flat as you grow
Reserver
- ✓Matches reservations to what's actually running
- ✓Flags expiries before they lapse
- ✓Re-buys renewals automatically — renewal autopilot
- ✓Shows the exact purchase math — term, payment, break-even, $/yr
- ✓Buys reservations for you — RDS, ElastiCache, EC2 — one place
- ✓One coverage view across many accounts — AWS Organizations
- ✓Price stays flat as you grow — never a cut of your savings
Questions
Questions, answered.
Do you take a percentage of my savings?
No, never. Reserver is a flat monthly price. Percentage-of-savings pricing means your vendor profits most when your bill was worst — we'd rather just charge for the software.
Does Reserver need write access to my AWS account?
Not to watch. The Watch plan uses a read-only IAM role limited to Describe/List calls for RDS, ElastiCache, and EC2. Purchasing on Autopilot uses a separate, tightly-scoped role that can buy reservations and nothing else — it cannot touch your workloads, data, or networking. More in our security model.
We already use Cost Explorer's recommendations. Why Reserver?
Cost Explorer tells you a number and leaves you to reconcile it across three consoles. Reserver matches every reservation to a running instance, shows its work, flags the gaps and expiries, and then makes the purchase a button — or a rule.
I only have a handful of reservations — is Reserver worth it?
Usually, yes. Even a single reservation renewed a couple of weeks late typically costs more than a year of Reserver — Watch is free during early access, and Autopilot is a flat $149/month whether you're tracking ten reservations or ten thousand. Small fleets get the same coverage map and expiry radar as anyone else.
We run many AWS accounts. Does Reserver scale to that?
Yes — that's what Enterprise is for. Connect an AWS Organization and see every account in one coverage map, with SSO/SAML and custom approval chains for procurement. Support for other clouds and AWS Savings Plans is on the roadmap, not shipping today.
Reserved
Stop overpaying for a steady fleet.
Reserver is in early access. Join the list and we'll onboard you as capacity opens up — first recommendation within minutes of connecting.