GCP Cloud Functions is a serverless compute service provided by Google Cloud Platform (GCP) for building and deploying event-driven, scalable, and lightweight applications and microservices. It allows developers to write and deploy functions in popular programming languages, such as JavaScript, Python, and Go, without managing servers or infrastructure. Readers can explore GCP Cloud Functions' features, triggers, and integrations with GCP services for implementing serverless architectures, reducing operational overhead, and scaling applications dynamically based on demand, enabling efficient and cost-effective cloud-native development.