For this assignment, create a design for a secure messaging infrastructure. The solution must have the capability for both email and instant messaging. You can choose any system, server, client, and security appliance or software that you know about or can find information about from any appropriate source. Your design may be real or notional. It may include components that exist or that are only a figment of your imagination. The only rule about using any component is that you must explain how it contributes to the security of your email system and what, if any, drawbacks or limitations it has. Produce a Visio diagram of your logical infrastructure and a one page Executive Summary that explains the major components, their functions, and capabilities/limitations. Include protection against spam, spyware, and phishing emails in your infrastructure.Files need to be in formats compatible with Microsoft Office products, so they can be easily viewed. Save your deliverables in individual files named CYBR515 Assignment 7_3a <put your name here> and CYBR515 Assignment 7_3b <put your name here>, and attach them to this assignment.[Note: If you're unfamiliar with the Executive Summary format, I suggest performing an Internet search on that term. There are may good examples.]Again, please note that both files should be attached at the same time that you submit your assignment.

Assignment: History of Enterprise Systems (ES)Prepare for this Assignment by reviewing Sections 1.1, 1.2, 1.3, 2.1, 2.3, 2.4, and 2.7 of the course textbook and other resources listed in the Explore section of the classroom.Write a paper that examines the history of Enterprise Integration (EI) and Enterprise Information Systems in businesses from the 1960s to today. Within the paper, be sure to include an analysis of why you think changes occurred and the impact of the changes on the effectiveness of enterprise information systems within organizations.Include figures, tables, or other visual aids that will aid a reader of your assignment in comprehending how we got to where we are with EI and enterprise information systems in organizations today and what the future of EI might look like in the coming decade.The finished assignment should be 2–4 pages. Assignment: History of Enterprise Systems (ES) Article: Romero, D., & Vernadat, F. (2016). Enterprise information systems state of the art: Past, present, and future trends. Computers in Industry, 79, 3–13. 1.https://www.sciencedirect.com/science/article/abs/pii/S0166361516300483?via%3Dihub2.Huemer, C., Kappel, G., Wimmer, M., Proper, H. A., Reich, S., Behrendt, W., … Zoitl, A. (2018). Interoperability and integration in future production systems. 2018 IEEE 20th Conference on Business Informatics (CBI), Business Informatics (CBI), 2018 IEEE 20th Conference on, CBI, 175.https://ieeexplore-ieee-org.ezp.waldenulibrary.org/document/8453953