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Glossary
Self-Hosted vs Cloud Billing
Self-hosted vs cloud billing is the choice between running billing software on infrastructure you operate and consuming it as a vendor-operated service. The choice decides who handles upgrades and scaling, where usage and revenue data sits, which compliance evidence you present, and who answers when invoicing breaks.
Key Takeaways
The decision turns on operations, not features: a self-hosting team pulls each release and watches its own health endpoint, while a cloud customer gets vendor upgrades and a status page.
Production self-hosting has a published price: one vendor's AWS guide estimates about $5,500 a month for 100 million events, or $55 per million events before any salary.
Some vendor clouds carry a five-figure minimum annual commitment, and some vendors sell premium features on both their cloud and self-hosted deployments.
A multi-tenant vendor's control plane can run in a single jurisdiction, often the United States, and enterprise legal teams flag that part.
How do self-hosted and cloud billing compare on the axes that matter?
They differ most on who operates the system and least on what it can bill. Flexprice's docs and public vendor pages supply the cells.
Axis | Self-hosted | Vendor cloud |
|---|---|---|
Upgrades and scaling | You pull a release, run migrations, and size Postgres, Kafka, and ClickHouse | The vendor runs upgrades |
Data location | Wherever you deploy it | The vendor's regions; Flexprice Cloud runs in the US and India |
Compliance evidence | A self-hosted build doesn't ship the vendor's SOC 2 (Flexprice) | You request the vendor's report, as on Flexprice's trust center |
Cost structure | Free license, then infrastructure and staff | Plan fee or quote; some vendors set a five-figure annual minimum |
Time to get running | Weeks to months for self-hosted software in general | Days |
Incident visibility | You poll | The vendor posts incidents and maintenance on a status page |
Webhook defaults (Flexprice) | Native delivery with no signature and a short retry window until Svix is enabled | Svix delivery with signatures and long retries |
Exit cost | Data already sits in your Postgres and ClickHouse | A multi-tenant to BYOC move can look like a data export, a fresh install, and a parallel validation period |
What does self-hosting cost compared with a vendor's cloud?
Self-hosting swaps a plan fee for an infrastructure bill plus staff time, and the infrastructure bill is publishable. Flexprice's AWS guide prices its production tier at 100 million events a month:
AWS subtotal: about $5,100.
Third-party services (Temporal Cloud, Supabase, Svix, Grafana): about $400, the guide's stated figure.
Total: about $5,500 a month, or $66,000 a year.
Rate: $55 per million events ($5,500 divided by 100).
The guide doesn't price staff time. Vendor clouds quote against billing volume, monthly events, tier, and support, so get a quote at your own volume and set it against $55 per million plus your salary line.
Which one should you pick?
It depends on what you need. Teams self-host for control, sovereignty, and customization, not for savings, and self-hosting can cost more than a vendor's cloud once staff time counts.
A cloud billing platform can be operational in days, which is the case for cloud when speed to a working system matters more than data location.
Verifiable data locality for regulatory audits is a reason to self-host. Self-hosted billing covers your own VPC, and on-premise billing covers data centers.
Code-level customization is another reason, and open source billing covers it. Weigh build vs buy before committing.
Can you switch between self-hosted and cloud later?
Yes, if the platform has no feature disparity between deployments, and Flexprice says all three of its options run the same engine. What changes in a move:
Operator: Flexprice's docs say Cloud is upgraded by Flexprice, while a self-hosted team pulls each release.
Defaults: Flexprice's docs list differences between Cloud and self-hosted, including webhook defaults and the API base URL.
Flexprice is enterprise-grade, open source usage based billing infrastructure for AI and SaaS companies. It can be deployed in your own VPC, on-prem, or on Flexprice's managed cloud. All three run the same engine: the API, consumer, and worker ship as one image in three roles, and Flexprice's architecture docs say the same containers run in the cloud and in self-hosted environments. The repository is AGPL-3.0. Check the plan first: managed VPC and on-prem deployment sit on Mission Critical, not the free self-hosted build, and SOC 2 Type II certifies Flexprice as an operator, so the managed deployment carries it. Read the self-hosting docs for what changes in your code.
Related terms
Each of these answers a question the comparison leaves open.
Self-Hosted Billing details the services you take on when you run the stack.
On-Premise Billing covers the strict case where the hardware is yours.
Open Source Billing explains the license question that deployment doesn't settle.
Build vs Buy (Billing) prices writing the engine yourself.
Billing System Migration is the work if you change your mind.
Billing Engine is the component that runs in either place.
FAQ
Is cloud billing less secure than self-hosted billing?
It depends on the deployment. Multi-tenant SaaS suits most SOC 2 and ISO 27001 audits, while isolated deployments avoid the shared blast radius of multi-tenant clouds. Ask which controls the vendor runs and which you'd run yourself.
Does a vendor's cloud mean your billing data leaves your country?
Not always. Some vendors pin each tenant to a region, and Flexprice Cloud keeps a tenant's data in the region it was created in, US or India. Ask where the vendor's control plane runs too, since legal teams flag that part.
Can you run both self-hosted and cloud billing at once?
Yes, if the platform supports both deployment models without feature disparity. A split is possible: keep billing data for regulated markets on controlled infrastructure and serve other markets from the cloud. Flexprice says its three deployment options run the same engine.
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