How Much Does It Cost to Host a SaaS on the Cloud?
SaaS hosting typically costs $50-$200/mo at 1,000 users, $300-$800/mo at 10,000 users, and $1,500-$4,000/mo at 100,000 users. The database and Kubernetes node count are the biggest drivers as you scale.
Building a SaaS product means choosing between AWS, Azure, and GCP for your infrastructure — and each provider prices compute, databases, and networking differently. A wrong choice can cost thousands per month at scale. Use our free calculator below to get a side-by-side cost comparison for your SaaS architecture across all three providers.
What Goes Into SaaS Cloud Costs?
SaaS infrastructure typically requires compute instances or Kubernetes clusters for your application servers, a managed relational database for multi-tenant data, object storage for user uploads and assets, a load balancer for distributing traffic, caching (Redis or Memcached) for session management and performance, and a CDN for static asset delivery. Each of these components is priced differently across AWS, Azure, and GCP — and the gap widens as you scale from 1,000 to 1,000,000 monthly active users.
How SaaS Costs Scale with Users
At 1K monthly active users, most SaaS apps run comfortably on a single VM or small container setup costing $50–$200/month. At 10K users, you typically need dedicated database instances and caching, pushing costs to $300–$800/month. By 100K users, Kubernetes becomes the practical choice for auto-scaling, and costs can range from $1,500–$4,000/month depending on the provider. At 1M users, architecture decisions made early on have compounding cost effects — the difference between providers can exceed $2,000/month.
AWS vs Azure vs GCP for SaaS
AWS offers the broadest service catalog and most mature Kubernetes (EKS) support, but tends to be the most expensive for compute. Azure integrates well with enterprise environments and offers competitive pricing on SQL databases through Azure SQL. GCP is often the cheapest for compute (especially with sustained use discounts) and has the strongest managed Kubernetes offering (GKE) with no cluster management fee. The right choice depends on your specific architecture — which is exactly what this calculator helps you determine.
Key Cost Factors
- Compute: VMs or Kubernetes nodes for application servers
- Database: Managed PostgreSQL, MySQL, or SQL Server
- Caching: Redis or Memcached for session and query caching
- Storage: Object storage for user files and backups
- Networking: Load balancer, CDN, and data transfer costs
- Monitoring: Log aggregation, metrics, and alerting
Frequently Asked Questions
How much does SaaS hosting cost on AWS vs Azure vs GCP?
At 1K monthly active users, expect $50-$200/month on any of the three providers using a single VM or small container setup. At 10K users, dedicated database instances and caching push costs to $300-$800/month. At 100K users, Kubernetes becomes the practical choice and costs range $1,500-$4,000/month. AWS tends to run higher on compute, GCP is often cheapest with sustained-use discounts, and Azure is competitive if you're already using Azure SQL.
What is the cheapest cloud provider for a SaaS product?
It depends on your architecture rather than a single winner. GCP is frequently cheapest for compute-heavy workloads thanks to sustained use discounts and no GKE cluster management fee. AWS wins when you need its broader managed-service catalog and are willing to pay a premium for maturity. Azure is attractive if you're already paying for SQL Server licensing or other Microsoft enterprise agreements. Run your specific user count and stack through the calculator above rather than assuming.
What drives the cost of hosting a SaaS application?
Compute (VMs or Kubernetes nodes) and the managed database are usually the two largest line items, followed by caching layers like Redis for session and query performance. Object storage for user uploads, a load balancer, CDN, and data transfer costs add up as traffic grows, and monitoring/log aggregation becomes a meaningful cost once you're running multiple services. The gap between providers widens most at the database and networking layers.
How accurate are these SaaS cost estimates?
Estimates use published on-demand list prices from AWS, Azure, and GCP for US regions, assuming 730 hours per month of usage, last verified 2026-07-15. They don't include reserved instance discounts, committed-use contracts, or enterprise agreements, which can lower real bills by 20-60%. Use the numbers as a starting comparison point between providers rather than a guaranteed invoice total — see /methodology for the full calculation approach.