diff --git a/README.md b/README.md
index c3e98d8..e4a267b 100644
--- a/README.md
+++ b/README.md
@@ -527,8 +527,13 @@ For instance, take into account the snaptshot above. If you already know how to
              * [EKS - Tenancy Best Practices](https://aws.github.io/aws-eks-best-practices/security/docs/multitenancy/) 📰 🆓
              * [Loft - Kubernetes MultiTenancy](https://loft.sh/features/kubernetes-multi-tenancy)
              * [Architecting multi-tenant PaaS offerings with Amazon EKS](https://www.youtube.com/watch?v=P29eL_51iYU) 📼 🆓
+            * Usecases
+              * [Kubernetes Platform @ Pinterest](https://medium.com/pinterest-engineering/building-a-kubernetes-platform-at-pinterest-fb3d9571c948) 📰 🆓
         * Service Mesh
           * [What is service mesh?](https://www.youtube.com/watch?v=vh1YtWjfcyk) 📼 🆓
+          * Consul
+            * [Introduction to Consul](https://www.youtube.com/watch?v=mxeMdl0KvBI) 📼 🆓
+            * [How Consul works with Kubernetes](https://www.youtube.com/watch?v=K93ZaUzwEWk) 📼 🆓
           * Istio
             * [Istio Explained - IBM Videos](https://www.youtube.com/watch?v=6zDrLvpfCK4) 📼 🆓
             * [What is Istio? ](https://www.youtube.com/watch?v=1iyFq2VaL5Y) 📼 🆓
@@ -544,13 +549,17 @@ For instance, take into account the snaptshot above. If you already know how to
           * [Introduction to Terraform](https://www.youtube.com/watch?v=h970ZBgKINg) 📼 🆓
           * [Infrastructure as Code in the Real World?](https://www.youtube.com/watch?v=S6vS5mzivFo) 📼 🆓
           * [Terraform: Up and Running](https://learning.oreilly.com/library/view/terraform-up-and/9781491977071/) 📕 💰
-        * Packer
-          * [The Packer Book](https://learning.oreilly.com/library/view/the-packer-book/9780988820272/) 📕 💰
         * [CDK - CloudFormation Development Kit](https://docs.aws.amazon.com/cdk/latest/guide/home.html)
           * [Infrastructure is Code with CDK](https://www.youtube.com/watch?v=ZWCvNFUN-sU&feature=youtu.be) 📼 🆓
           * [CDK Best Practices](https://github.com/kevinslin/open-cdk) 💻 🆓 📰
-      * Usecases
-        * [Kubernetes Platform @ Pinterest](https://medium.com/pinterest-engineering/building-a-kubernetes-platform-at-pinterest-fb3d9571c948) 📰 🆓
+        * Packer
+          * [The Packer Book](https://learning.oreilly.com/library/view/the-packer-book/9780988820272/) 📕 💰
+      * Secret Management
+        * [Vault](https://www.vaultproject.io) - Secure dynamic infrastructure across clouds and environments
+          * [Introduction to Vault](https://www.youtube.com/watch?v=VYfl-DpZ5wM) 📼 🆓
+      * Session Management
+        * [Boundary](https://www.boundaryproject.io) - Secure access to hosts and services
+          * [Introduction to Boundary](https://www.youtube.com/watch?v=eRZuaw0AW0I) 📼 🆓 
     * Linux
       * [LFS - Linux from Scratch Book](http://www.linuxfromscratch.org/lfs/downloads/8.4/LFS-BOOK-8.4.pdf) 📼 🆓
       * systemd
diff --git a/TODO b/TODO
index c2ebdca..9a023e2 100644
--- a/TODO
+++ b/TODO
@@ -32,6 +32,7 @@ https://www.amazon.de/Designing-Data-Intensive-Applications-Reliable-Maintainabl
 Consul
 Etcd
 Redis with WAL?
+https://www.youtube.com/watch?v=DUbEgNw-F9c
 
 # Performance?
 Zero Copy
@@ -167,6 +168,10 @@ https://www.youtube.com/watch?v=o_AIw9bGogo
 
 Transaction Theory
 http://faculty.juniata.edu/rhodes/dbms/transproc.htm
+SQL/Database Specific
+https://www.youtube.com/watch?v=HQ2mcEssJ7Y
+https://www.youtube.com/watch?v=xYysvuDAX70
+
 
 Redis Transactions
 
diff --git a/resources/topic-graph.mmd b/resources/topic-graph.mmd
index d7998e1..0e2fe2c 100644
--- a/resources/topic-graph.mmd
+++ b/resources/topic-graph.mmd
@@ -108,10 +108,6 @@ graph TD
         CfgMgt --> Puppet
         CfgMgt --> Ansible
         CfgMgt --> Chef
-      IaC --> Prov[Provisioning]
-        Prov --> TF[Terraform]
-        Prov --> CDK[Cloud Formation Development Kit]
-        Prov --> PK[Packer]
       IaC --> Orc[Orchestration]
         Orc --> ECS[Elastic Container Service]
         Orc --> K8S[Kubernetes]
@@ -119,6 +115,15 @@ graph TD
         Orc --> Nomad
         Orc --> SerM[ServiceMesh]
           SerM --> IsT[Istio]
+      IaC --> Prov[Provisioning]
+        Prov --> TF[Terraform]
+        Prov --> CDK[Cloud Formation Development Kit]
+        Prov --> PK[Packer]
+      IaC --> SecM[Secret Management]
+        SecM --> Vlt[Vaul]
+      IaC --> SessM[Session Management]
+        SessM --> Bdry[Boundary]
+
     OPS --> NET[Networking]
       NET --> NETP[Protocols]
         NETP --> DNS
diff --git a/resources/topic-graph.png b/resources/topic-graph.png
index 3a24356..ae4afa2 100644
Binary files a/resources/topic-graph.png and b/resources/topic-graph.png differ