A method of enabling a cloud connector system to establish a secure connection between on-premise devices and a cloud server hosting a cloud Certificate Lifecycle Management as a Service, CLMaaS, for validating and upgrading a certificate on the on-premise devices, the method comprises: implementing, a plurality of cloud connectors (102A-N) in a tenant premise comprising a plurality of on-premise devices (104A-N) to establish a full-duplex connection between the plurality of on-premise devices (104A-N) and the cloud Certificate Lifecycle Management as a Service, CLMaaS, hosted on the cloud server with the plurality of cloud connectors (102A-N), wherein the plurality of cloud connectors (102A-N) are configured to accept requests related to certificate validation and upgradation from the cloud CLMaaS through a cloud connector proxy server and execute the requests in the plurality of on-premise devices (104A-N) on behalf of device communication layer of the cloud CLMaaS, wherein the plurality of cloud connectors (102A-N) are hosted with in a datacenter; performing, a runtime analysis of the connection between the cloud server and the plurality of cloud connectors (102A-N), wherein the runtime analysis of the connection is performed based on the number of requests received per minute from the cloud CLMaaS to the plurality of cloud connectors (102A-N); routing, the requests from the cloud CLMaaS to the plurality of on-premise devices (104A-N) through the plurality of cloud connectors (102A-N) based on the runtime analysis of the connection, wherein a data center routes the requests between the plurality of cloud connectors (102A-N) based on the runtime analysis of the connection; and enabling the cloud connector system to execute the certificate validation and upgradation in the on-premise devices based on the request from the cloud CLMaaS. implementing, a plurality of cloud connectors (102A-N) in a tenant premise comprising a plurality of on-premise devices (104A-N) to establish a full-duplex connection between the plurality of on-premise devices (104A-N) and the cloud Certificate Lifecycle Management as a Service, CLMaaS, hosted on the cloud server with the plurality of cloud connectors (102A-N), wherein the plurality of cloud connectors (102A-N) are configured to accept requests related to certificate validation and upgradation from the cloud CLMaaS through a cloud connector proxy server and execute the requests in the plurality of on-premise devices (104A-N) on behalf of device communication layer of the cloud CLMaaS, wherein the plurality of cloud connectors (102A-N) are hosted with in a datacenter; performing, a runtime analysis of the connection between the cloud server and the plurality of cloud connectors (102A-N), wherein the runtime analysis of the connection is performed based on the number of requests received per minute from the cloud CLMaaS to the plurality of cloud connectors (102A-N); routing, the requests from the cloud CLMaaS to the plurality of on-premise devices (104A-N) through the plurality of cloud connectors (102A-N) based on the runtime analysis of the connection, wherein a data center routes the requests between the plurality of cloud connectors (102A-N) based on the runtime analysis of the connection; and enabling the cloud connector system to execute the certificate validation and upgradation in the on-premise devices based on the request from the cloud CLMaaS.