Advanced Software Systems Inc. (Assyst Inc). Advanced Software Systems, Inc. (ASSYST) is a Global IT Services company that enhances the value of our clients’ information technology (IT) investments and facilitates the alignment of information technology in an organization with its overall business strategy, using a combination of well-defined processes and best practices. ASSYST has attained CMMI Level 3 process maturity rating, and we are on schedule to attain our CMMI Level 5 rating. We are a Small Business and a Minority Business Enterprise (MBE, VMSDC), with more than 18 years of experience in System Integration and IT Consulting Services.