My primary solution for unifying these application systems is by implementing a Single Sign-On (SSO) system, such as a portal. Within the portal, I would create folders with the various needs (teaching and learning, administrative, etc.), and I would have each licensed application placed within those folders. School employees would have their own portal for their various roles (special education, elementary, secondary, administrative, classified, etc.), and each application tile located in the portal would contain the necessary data for each employee.
The portal would offer various applications that would satisfy the same needs, but would prioritize some over others. For instance, I would prioritize one Learning Management System (LMS), but would offer application tiles for schools and teachers to use, as needed. GAFE and Google Classroom, as well as Edmodo or Hapara could be listed in such teaching and learning management folders within the portal, but not required or emphasized, so as to not work against the unity of the school and district. Teachers who would like to “app smash” using various tools—depending on their level of EdTech knowledge and digital literacy—could do so, with the guidance of district IT personnel.
Having the overall SSO I develop remain in line with the Application Architecture within the overall district EA would also be something I clarify as I work on unifying the various application systems. I would want the portal to allow for IT communication access, such as a notice to outline the schedule of updates and replacements of certain applications. Upon each portal login by any district employee, the notice would pop up until the employee verified his or her understanding of it (clicking a box or having to scroll through the notice, etc.).
My current school district has managed to successfully implement such a system. For instance, when I log in to my portal from the district website, I find each application I need for managing my extra hourly time cards, my paystubs, myPD professional development schedule and map (and self-assessment with the CSTP-based rubrics), math curriculum software (with each classroom roster and data), as well as many other useful applications. This portal acts akin to my own iPhone with all of my necessary applications, only each application is much more scrutinized by the district IT team.