Network isolation with cloud networks

A method implemented in a host computer system comprising a processor and a memory, the method comprising:

• implementing a workspace, wherein the workspace is configured to enable operation of a first set of one or more applications or processes via a first memory space;
• implementing an isolated computing environment, the isolated computing environment being configured to enable operation of a second set of one or more applications or processes via a second memory space, wherein the isolated computing environment is configured to access an Internet-based cloud service via at least one application of the second set of applications;
• isolating the isolated computing environment from the workspace using an internal isolation firewall;
• and
• communicating with at least one proxy server in order to access the Internet-based cloud service, wherein the isolated computing environment is configured to authenticate with an authentication device in order to allow communication between the at least one application and the Internet-based cloud service.