---
title: 'ParkMyAWS vs DIY Lambda + EventBridge Scheduling'
description: 'A detailed comparison of building your own AWS scheduling with Lambda and EventBridge versus using ParkMyAWS. Feature comparison, total cost of ownership, and when DIY makes sense.'
date: '2026-02-18'
readingTime: '5 min read'
---

## The DIY Temptation

When teams first look at scheduling EC2 and RDS instances, the obvious answer seems to be: build it yourself with Lambda and EventBridge. AWS provides all the building blocks. Lambda is nearly free at low volumes. EventBridge handles cron-style scheduling natively. How hard can it be?

The answer depends on how many accounts, regions, and edge cases you need to handle. A quick prototype works fine for one account in one region. But production-grade scheduling across your organization is a different story.

## Feature Comparison

Here is how a DIY Lambda + EventBridge solution compares to using a managed tool like ParkMyAWS.

| Feature          | ParkMyAWS                          | DIY (Lambda + EventBridge) |
| ---------------- | ---------------------------------- | -------------------------- |
| Setup time       | 5 minutes                          | 2-4 weeks                  |
| Maintenance      | Fully managed                      | You maintain everything    |
| Multi-account    | Built-in                           | Deploy per account         |
| Multi-region     | Any region from dashboard          | Configure per region       |
| Failure handling | Automatic retries + alerts         | Build your own             |
| Monitoring       | Dashboard + notifications          | CloudWatch setup required  |
| Schedule changes | One click                          | Redeploy code              |
| Edge cases       | Handled (pending states, Multi-AZ) | You discover them          |

## Total Cost of Ownership

A DIY solution looks free on paper because Lambda and EventBridge costs are negligible. But the real cost is developer time — and the ongoing burden of maintaining infrastructure you did not need to build.

Consider what goes into a production-ready DIY solution: 2-4 weeks of initial development, IAM roles per account, error handling and retry logic, CloudWatch dashboards and alarms, and ongoing maintenance whenever AWS changes APIs or you add new accounts.

A managed tool like [ParkMyAWS](https://parkmyaws.com) costs a flat monthly fee and includes everything — setup takes 5 minutes, not weeks. For most teams, the subscription pays for itself in the first month through saved developer time alone.

## When DIY Makes Sense

Building your own scheduling is reasonable if you have a single AWS account with a handful of instances in one region, your team enjoys building infrastructure tooling, and you have the bandwidth to maintain it long-term. If any of those conditions do not hold, a managed solution will save you time and headaches.

## The Bottom Line

The question is not whether you _can_ build EC2/RDS scheduling yourself — you absolutely can. The question is whether that is the best use of your engineering time. Most teams conclude it is not, especially when a managed alternative costs less than a single hour of developer time per month.