Heroku vs Vercel

Heroku and Vercel serve fundamentally different architectures within the PaaS market. Heroku operates as a traditional container-based platform, scaling from $5.00/mo for entry-level projects up to $1500.00/mo for enterprise-grade workloads utilizing as much as 126 GB of RAM. Vercel targets a more modern, edge-centric model, capping its primary pricing at $20.00/mo with a maximum RAM ceiling of 3 GB. While Heroku provides robust disk storage up to 2000 GB and massive egress quotas reaching 20000 GB, Vercel focuses on high-concurrency frontend delivery, offering unlimited app instances and visits but significantly tighter resource constraints.

• Vercel enforces a strict $0.15/GB penalty for both extra storage and egress bandwidth, creating a sharp cost cliff for data-heavy applications.
• Heroku's memory allocation is significantly more flexible, providing up to 126 GB of RAM, whereas Vercel limits your environment to 3 GB per instance.
• Heroku's pricing scales linearly with hardware capacity, reflecting its roots in managing persistent background workers, while Vercel’s platform assumes a stateless execution model.
• Bandwidth limits on Heroku are designed for sustained throughput, whereas Vercel's 100 GB to 1000 GB egress windows are optimized for caching static assets rather than serving large dynamic data blobs.

Heroku remains the standard for teams needing persistent background processes, heavy database integration, and high RAM overhead for legacy application stacks. Vercel provides a lower barrier to entry for developers shipping frontend-heavy applications, though you will quickly hit the 3 GB memory ceiling if you attempt to run complex server-side logic or memory-intensive compute tasks. Choosing between them depends on whether your infrastructure requires a long-running, stateful container or a high-performance, edge-distributed execution environment.