Platform Engineering - SLA vs SLO & Platform Org Chart

When building and operating platform services—whether it’s cloud hosting, APIs, or IT support—you’ll often hear the terms SLA and SLO. They might sound similar, but they serve very different purposes.

U.2 vs E3.S SSD: What Is the Difference?

When choosing enterprise NVMe storage for servers and data centers, two form factors are commonly discussed today: U.2 and E3.S. Although both are designed for high-performance and high-reliability workloads, they differ significantly in physical design, scalability, cooling, and long-term viability.

This article explains the key differences in a practical and easy-to-understand way.

Do I Need EVPN L3 Routing If L2 over L3 Is Enough?

When designing a modern data center network, a very common architecture today is L3 underlay + VXLAN overlay + EVPN. 

Sooner or later, however, the following question comes up:

Do I really need EVPN L3 routing (L3 VNI) if I only need Layer 2 connectivity over a Layer 3 network?

The short answer is: no, you don’t.
The longer and more important answer is when it makes sense and when it doesn’t. 

That’s exactly what this article explains. 

Introduction to Netris Network Automation and Abstraction Platform

If you have ever built or operated a real network, you already know the problem: networking is often the last part of the infrastructure that still relies on manual work, device-by-device configuration, and vendor-specific CLI syntax. While compute and storage moved towards automation and declarative management years ago, networking often lags behind. 

Here are two introductions videos ...

In this post, I want to briefly introduce Netris and explain why it is interesting from the perspective of modern, automation-driven environments.  

What is an FRR Router?

What Is a Free Range Routing (FRR) Router?

The term “FRR router” appears frequently in enterprise, datacenter, and ISP networking discussions. Despite how it sounds, it is not a product name and not a hardware device.

What Is Free Range Routing?

Free Range Routing (FRR) is an open-source routing software suite. The name Free Range reflects its original goal: routing software that is free, open, flexible, and not tied to proprietary hardware.

FRR provides implementations of major dynamic routing protocols and runs on general-purpose operating systems such as Linux and FreeBSD. 

A Simple Guide to SFPs, DAC Cables, CWDM, DWDM, and Network Speeds (1G to 400G)

When you hear terms like SFP, DAC, CWDM, or 100G, it can feel confusing at first. These technologies are common in data centers, ISPs, and modern enterprise networks.
This guide breaks them down in a simple, practical way that anyone can understand.

SFP, SFP+, SFP28, QSFP - What Are These?

These are small, pluggable modules that go into switches, routers, servers, and transmission devices. They allow network equipment to connect using fiber or copper.

Project Stalwart - mail & collaboration server

Stalwart is an open-source mail & collaboration server with JMAP, IMAP4, POP3, SMTP, CalDAV, CardDAV and WebDAV support and a wide range of modern features.

https://stalw.art/ 

https://stalw.art/docs/install/platform/docker/ 

https://github.com/stalwartlabs/stalwart