The document discusses how application modernization requires integration modernization as well. Integration architectures have evolved from monolithic to SOA to microservices-based. Modern integration involves deploying integrations as lightweight microservices in containers rather than centralized integration hubs. This allows for greater agility, autonomy, and cloud-native capabilities. The IBM Garage approach can help plan and execute an integration modernization project through techniques like design thinking, architecture workshops, and DevOps practices.