diff --git a/README.md b/README.md
index 1030e0e..c32721d 100644
--- a/README.md
+++ b/README.md
@@ -350,6 +350,10 @@ _Note to readers: This list refers to some of the articles, posts, videos, tools
Facebook
+### Blog Posts
+
+* [More details about the October 4 outage](https://engineering.fb.com/2021/10/05/networking-traffic/outage-details/)
+
### Videos
* [A Customer Service Approach to SRE](https://www.usenix.org/conference/srecon19emea/presentation/looney)
@@ -510,6 +514,7 @@ _Note to readers: This list refers to some of the articles, posts, videos, tools
* [Scaling SRE Organizations: The Journey from 1 to Many Teams](https://www.usenix.org/conference/srecon19americas/presentation/franco)
* [SRE Classroom - How to Design a Distributed System in 3 Hours](https://www.usenix.org/conference/srecon19americas/presentation/thomas)
* [Using PRDs and User Journeys to Design User-Friendly Tools](https://www.usenix.org/conference/srecon19americas/presentation/stockman)
+* [How Google SRE and Developers Work Together](https://www.youtube.com/watch?v=DOQqOrHs3VY)
@@ -538,6 +543,16 @@ _Note to readers: This list refers to some of the articles, posts, videos, tools
+
+ Gusto
+
+### Blog Posts
+
+* [Service Level Objectives for On-call Peace of Mind](https://engineering.gusto.com/slos-for-peace-of-mind/)
+* [Debugging Sidekiq Poison Pills](https://engineering.gusto.com/debugging-sidekiq-poison-pills/)
+
+
+
Halodoc
@@ -934,6 +949,7 @@ _Note to readers: This list refers to some of the articles, posts, videos, tools
### Blog Posts
+* [Infrastructure Observability for Changing the Spend Curve](https://slack.engineering/infrastructure-observability-for-changing-the-spend-curve/)
* [Slack’s Outage on January 4th 2021](https://slack.engineering/slacks-outage-on-january-4th-2021/)
* [A Terrible, Horrible, No-Good, Very Bad Day at Slack](https://slack.engineering/a-terrible-horrible-no-good-very-bad-day-at-slack/)
* [Deploys at Slack](https://slack.engineering/deploys-at-slack/)