IN THIS PAPER, FIRST WE GET FAMILIAR WITH KEY TERMS ON SOFTWARE ARCHITECTURE AREA. THEN WE MENTION PRINCIPAL RULES ON MICROSERVICES ARCHITECTURE. AFTER THAT, WE SHOW GENERAL INTEREST IN MICROSERVICES ARCHITECTURE COMPARING TO THE SERVICE ORIENTED ARCHITECTURE BY FETCH THE GOOGLE TREND SERVICE STATISTICS. AFTER THAT, WE DISCUSS ABOUT MONOLITHIC ARCHITECTURE MAIN ISSUES AND COMPARING MICROSERVICES ARCHITECTURE WITH SERVICE ORIENTED ARCHITECTURE. IN THE MOST IMPORTANT SECTION OF THE ARTICLE, WE HIT TECHNICAL AND EXPERIMENTAL RESULT THAT EXTRACTED FROM 21 NOTABLE DEVELOPERS AND EXPERT IN SOFTWARE INDUSTRY IN MIGRATION CAUSES TO THE MICROSERVICE ARCHITECTURE WHICH MOST IMPORTANT ONE NAMED THE ENHANCED MAINTENANCE IN LARGE SCALE. WE WILL INTRODUCE JOLIE PROGRAMMING LANGUAGE WHICH NATIVELY SUPPORT MICROSERVICE ARCHITECTURE. MICROSERVICE FORWARD CHALLENGES WILL BE DESCRIBE AND CONTAINER TECHNOLOGY ON THE SHOULDER OF DOCKER OPEN SOURCE PLATFORM WILL BE INTRODUCE. CONTAINER IS AS A COMPETITOR FOR HYPERVISOR AND WE WILL HEAR OF THEM MORE IN FUTURE. MOST IMPORTANT DESIGN PATTERN FOR MICROSERVICES WILL BE DESCRIBE WITH SOLUTION.

With the rapid growth and development of cloud computing, many startups or even large enterprises have decided to employ cloud services due to its dynamic provisioning and also reducing costs through the reduction of seasoned human resources needed to maintain the infrastructure. On the other hand, the risks of using shared resources and virtual machines are among the biggest threats that have always challenged the advantages of using cloud services. It is now possible for an attacker to attack a virtual machine and through that target the virtual machine manager or HYPERVISOR. This approach will allow the attacker to completely control other virtual machines existing in the domain. Therefore, using a mechanism to decrease the colocation degree of vulnerable virtual machines on the same physical machine can be effective in reducing such security risks. To address these issues, we have proposed a security-aware virtual machine placement scheme to reduce the risk of vulnerable virtual machines co-placement. To manage the precision of security evaluation, it is vital to consider some hesitancy factors regarding security evaluations. Thus, to consider hesitancy in our proposed method, hesitant fuzzy sets are applied and several experimental evaluations have demonstrated the benefits of the proposed approach.