> For the complete documentation index, see [llms.txt](https://docs.infotopics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.infotopics.com/mailscheduler/prologue/architecture.md).
# Architecture
This page provides an overview of the system architecture for MailScheduler. It outlines both the **on-premises** and **cloud (SaaS)** deployment models to help you understand where data is processed, how communication flows, and how MailScheduler integrates into your infrastructure securely.
This diagram shows how MailScheduler can be deployed entirely within your organization's own infrastructure:
On-Premise Architecture
This diagram illustrates the cloud-based deployment of MailScheduler:
SaaS Architecture
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