Migrating to Google Cloud’s Application Load Balancer: A practical guide

This guide presents a structured approach to migrating on-premises load balancer configurations to Google Cloud's Application Load Balancer.

• •Migration follows four phases: discovery and mapping, choosing appropriate Google Cloud features, testing in staging environments, and phased canary deployment.
• •Common patterns use declarative features like URL Maps and Cloud Armor for redirects, rewrites, header manipulation, and ACLs.
• •Complex business logic leverages Service Extensions to inject custom code (Rust, C++, Go) directly into the load balancer's data path.
• •Testing validates redirects, security policies, and Service Extensions logic before production cutover.
• •Best practices include thorough configuration analysis, preferring declarative solutions, strategic Service Extensions use, continuous monitoring, and team training on Cloud Load Balancing.