diff --git a/README.md b/README.md
index 2949d8f..2fa6f38 100644
--- a/README.md
+++ b/README.md
@@ -202,6 +202,9 @@ At the moment this is not useful for anyone but myself, if at some point I find
       * Distributed Processing
         * Hadoop
           * [Hadoop: Up & Running](https://learning.oreilly.com/library/view/hadoop-the-definitive/9781491901687/) 📕 💰
+      * RPC - Remote Procedure Call
+        * [Schema Evolution: AVRO, Protobufs and Thrift](https://martin.kleppmann.com/2012/12/05/schema-evolution-in-avro-protocol-buffers-thrift.html) 📰 🆓
+        * [AVRO vs Protobufs vs Thrift](https://www.slideshare.net/IgorAnishchenko/pb-vs-thrift-vs-avro) 📰 🆓
   * Operations
     * Terminal
       * [Set of Bash Oneliners](https://github.com/onceupon/Bash-Oneliner) 💻 🆓
diff --git a/TODO b/TODO
index 7e67bbf..c2ff00b 100644
--- a/TODO
+++ b/TODO
@@ -74,8 +74,3 @@ https://github.com/jlevy/the-art-of-command-line
 https://github.com/djhworld/simple-computer
 http://www.brendangregg.com/linuxperf.html
 
-AVRO/PROTOBUFS/THRIFT
-
-https://martin.kleppmann.com/2012/12/05/schema-evolution-in-avro-protocol-buffers-thrift.html
-
-https://www.slideshare.net/IgorAnishchenko/pb-vs-thrift-vs-avro
diff --git a/resources/topic-graph.mmd b/resources/topic-graph.mmd
index 56644d8..1b68fe6 100644
--- a/resources/topic-graph.mmd
+++ b/resources/topic-graph.mmd
@@ -48,6 +48,10 @@ graph TD
       STM --> Kafka
       STM --> Kinesis
       STM --> NATS
+    DSi --> RPC[Remote Procedure Call]
+      RPC --> AVRO
+      RPC --> Protobufs
+      RPC --> Thrift
 
   SRE --> OPS[Operations]
     OPS --> OS[Operating Systems]
diff --git a/resources/topic-graph.png b/resources/topic-graph.png
index c6b1373..20eb079 100644
Binary files a/resources/topic-graph.png and b/resources/topic-graph.png differ