Web benefit revelation is the essential procedure and conventional technique that uses watchword based pursuit to find suitable web service. This strategy may not produce more good results. However, the non-real Quality of Service (QoS) parameters of the network benefits assumes an essential part of locating the network's benefits. For example, UDDI, WSDL, and SOAP have the ability to provide QoS -based web benefits exposure. Various research works are going on in the field of failure probability but there are also some other aspects which need to be taken care of like response time, throughput and quality of service among others. Hence research in these fields may prove to be more efficient if done in a sophisticated manner. This paper presents the survey conducted on earlier works on the QoS of web services in four different aspects. © IAEME Publication.