Explore is a powerful feature in Lumigo that allows users to quickly find events of interest in their Lambda invocations with fine-grained queries, solving the problem of sifting through thousands of invocations to find specific data. With Explore, users can search for invocations based on various fields and properties, such as duration, resource name, readiness, error, region, method, host, status code, entity type, key, and value. The feature provides free text search with logical operators AND, OR, and parentheses, allowing users to create complex queries. Users can also define ranges for certain fields, such as duration or status code. Explore is available in Lumigo's account, which can be signed up for free.