HTTP endpoints
Turn supported functions into secure API and webhook endpoints.
Functions
Run backend code on demand. No server waiting when you don’t.
Functions
Run backend code on demand. No server waiting when you don’t.
Turn events into working applications
Deploy APIs, webhooks, scheduled jobs and background tasks. Tower runs your code when it is invoked, so you can build backend capabilities without managing the underlying infrastructure.
FUNCTION EXECUTION on demand
HTTP requestScheduleEvent
INVOKEfunction() executing
RESULTReturned✓
TriggerExecute only when invokedReturn or record
Why teams use it
Built for work that does not need an always-on server
On-demand execution
Resources are used when your function runs.
India-region execution
Keep application logic closer to Indian users and Tower-hosted services.
Transparent pricing
See what you pay for invocations, execution and data transfer.
Managed runtime
Tower handles the execution infrastructure.
Use Functions for:
- APIs and form processing
- Payment and SaaS webhooks
- Scheduled automation
- Background jobs
- File and event processing
A request, schedule or supported event invokes the function. Tower executes the code and returns or records the result.
Capabilities
What you get on Day One
Scheduled execution
Run recurring reports, synchronisation, cleanup and notification tasks.
Logs and resource controls
Review invocation logs and configure supported memory, timeout and concurrency limits.
Tower service connectivity
Connect functions to supported Tower Buckets, Databases, Gateway and private services.
Economics
Pay for execution—not idle time
Functions are suited to intermittent and bursty workloads where an always-on server may remain unused for long periods.
Tower pricing should show every billable component upfront:
- Invocations
- Execution resources
- Outbound data transfer
- Included monthly usage
- Minimum billing duration
One workload. Visible units. Predictable cost.
Choose your runtime
Functions or Containers?
| Choose Functions for | Choose Container Instances for |
|---|---|
| Webhooks and lightweight APIs | Continuously running applications |
| Scheduled and background tasks | Long-running processes |
| Irregular or bursty traffic | Sustained, predictable traffic |
| Independent application logic | Complete backend services |
Use Functions for short, event-driven work. Move continuous or specialised workloads to Tower Container Instances or Virtual Machines.
Technical reference
Configuration & Platform Details
- Supported runtimes
- Languages and production versions
- Triggers
- HTTP, schedule, queue, storage or supported platform events
- Resource limits
- Memory, CPU, timeout and concurrency limits
- Scaling
- Scale-to-zero, maximum instances and throttling behaviour
- Networking
- Public endpoints, private connectivity and outbound access
- Deployment
- Portal, CLI, API, Git or package deployment
- Observability
- Logs, metrics and retention period
- Region
- Execution location and availability model
Pricing
Requests
| SKU | Price |
|---|---|
| Invocations | ₹ 38per month |
vCPU
| SKU | Price |
|---|---|
| functions-vCPU | ₹ 0per month |
Memory
| SKU | Price |
|---|---|
| functions-gib | ₹ 0per month |
Compute
| SKU | vCPU | Memory | Disk (NVMe SSD) | Price |
|---|---|---|---|---|
| Nano (128 MB) | 0 | 128Mi | 1 GB | ₹ 0per month |
| Small (512 MB) | 0 | 512Mi | 3 GB | ₹ 0per month |
| Micro (256 MB) | 0 | 256Mi | 1 GB | ₹ 0per month |
| Medium (1 GB) | 1 | 1Gi | 5 GB | ₹ 0per month |
| Large (2 GB) | 1 | 2Gi | 10 GB | ₹ 1per month |
| X-Large (4 GB) | 2 | 4Gi | 20 GB | ₹ 1per month |
Ready to launch
Ship the backend task—not another server
Deploy APIs, webhooks and automation as focused functions on Tower Cloud.
Deploy a function