diff --git a/free-programming-books.md b/free-programming-books.md
index 5a168e9cb0551a03888e51fc9d921457c2adbef0..981242845cb82165eaf267b2320355c30f219129 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -708,6 +708,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Practicing Domain-Driven Design - Part 1](https://leanpub.com/Practicing-DDD) - Scott Millett  *(Leanpub account or valid email requested)*
 * [Reactive Microservices Architecture](http://www.oreilly.com/programming/free/reactive-microservices-architecture-orm.csp) (email address *requested*, not required)
 * [Scrum and XP from the Trenches](http://www.infoq.com/minibooks/scrum-xp-from-the-trenches-2)
+* [Serverless apps: Architecture, patterns, and Azure implementation](https://docs.microsoft.com/en-us/dotnet/standard/serverless-architecture/)
 * [Site Reliability Engineering](https://landing.google.com/sre/book/index.html)
 * [Software Architecture Patterns](http://www.oreilly.com/programming/free/software-architecture-patterns.csp) (email address *requested*, not required)
 * [Software Engineering for Internet Applications](http://philip.greenspun.com/seia/)