diff --git a/2024/Images/day77.png b/2024/Images/day77.png
new file mode 100644
index 0000000..18849cc
Binary files /dev/null and b/2024/Images/day77.png differ
diff --git a/2024/day77.md b/2024/day77.md
index e69de29..354e9bd 100644
--- a/2024/day77.md
+++ b/2024/day77.md
@@ -0,0 +1,41 @@
+# Day 77 - Connect to Microsoft Graph in Azure DevOps using Workload Identity Federation - Jan Vidar Elven
+
+![day77](./images/day77.png)
+
+This note accompanies my contribution for 2024 edition of 90DaysOfDevOps, which consists of:
+
+- A video: [Link]()
+- A presentation deck for reference: [Link]()
+- This markdown file and a summary below, and a blog post where I have more details.
+
+## What is Workload Identity Federation?
+
+WIF is..
+
+## What are Service Connections?
+
+Service Connections..
+
+## About Microsoft APIs protected by Entra ID
+
+Microsoft have several well-known APIs that support OIDC (OpenID Connect) and OAuth2 for Authentication and Authorization, like Azure Resource Manager Rest API, Microsoft Graph API, KeyVault API to name a few.
+
+In addition you can create, expose and protect your own APIs via App Registrations, so there are a lot of usage scenarios.
+
+All this Microsoft APIs can be accessed securely and without secrets using Workload Identity Federation and Service Connections in Azure DevOps.
+
+## Blog post
+
+Here is a previous blog post I published that show the details on how to set this up:
+
+https://gotoguy.blog/2023/09/15/connect-to-microsoft-graph-in-azure-devops-pipelines-using-workload-identity-federation/
+
+## About me
+
+I'm Jan Vidar Elven, and work as a Senior Architect in Evidi AS in Norway, I'm a Microsoft Security MVP, and specialize in Microsoft Entra, IAM (Identity Access Management), IGA (Identity Governance & Administration), Security, Cloud Platform solutions using Microsoft Azure, and DevOps.
+
+Connect with me at:
+
+- [LinkedIn](https://linkedin.com/in/janvidarelven)
+- [X](https://x.com/JanVidarElven)
+- [GitHub](https://github.com/janvidarelven)