Monitoring an availability of a dynamically scalable web application having a plurality of microservices deployed on groups of servers each fronted by a load balancer. Examples include retrieving access log data entries from each load balancer, with the access log of each load balancer including a data entry for each HTTP Request received by the load balancer for the web application, each data entry including a Timestamp, an HTTP URL, and an HTTP Method of the HTTP Request, and a status code of a corresponding HTTP response, and with each microservice having a corresponding HTTP URL/HTTP Method pair. An availability of each microservice is determined based on the status codes of HTTP responses corresponding to data entries having HTTP URL/HTTP Method pairs corresponding to the microservice.