The article explores the role and importance of logging agents in modern software environments, emphasizing their ability to efficiently collect, parse, and enrich log data from various sources for centralized analysis. Logging agents like Logstash, Fluent Bit, and others are highlighted for their capacity to enhance system health monitoring by aggregating logs from disparate microservices and cloud-based architectures. While offering benefits such as data enrichment, ease of installation, and resiliency, logging agents are not indispensable, as alternatives like logging libraries and cron jobs exist, though they come with their own limitations. The article also presents examples of both open-source and proprietary logging agents, such as FileBeat, Fluentd, and Vector, detailing their functionalities and integration capabilities with full-stack observability platforms, thus aiding in the selection of appropriate solutions based on specific needs and budgets.