Creating a software solution that fulfils all the given requirements and creating a software solution that remains customizable and expandable while fulfilling the current requirements are often times different realities. Many of E.A.S.'s software solutions were the "first arriver" or "first adopter" within the relevant industry. Being the first adopter comes with a great deal of responsibility. If the solution is not expandable and customizable, then the client could lose their competitive advantage when competing firms "catch up" and produce their own variant of the software solution in question. In cases where the solution was not necessarily a "first adoption," customizability is still of utmost importance so that the software can keep pace with the client's continuously evolving business challenges.

For these reasons, E.A.S's solutions are written in a manner that emphasises both current and future customizability. When possible, E.A.S.'s applications are written as a series of interconnected modules, which ideally are loosely coupled and thus can be reused or expanded in future iterations without requiring modifications from other components.

Additionally, E.A.S's Software Development Lifecycle (SDLC) begins with a detailed analysis of the client's business needs and situation. Thus, the first focus is on understanding the client's business needs rather than beginning with discussing what the specific software requirements would be. This business-centric SDLC helps provide for future expandability because the software can be written to account for the possibility of future business challenges that would be relevant to the client's industry segment. During the software development process, E.A.S.'s project management philosophy allows project managers to continually prioritize future customizability and ensure it is being implemented at a source-code level.

At a technical level, certain design techniques are used where appropriate to keep the solution customizable. For example, display characteristics for user interfaces (UI) are generally maintained in a JSON object of settings which can then in turn be modified using a GUI administration tool. In more complex solutions, certain meta-data about class and object relationships is stored in a metadata database so that as modules are changed, added, or subtracted, the rest of the application can act accordingly by reading the metadata changes to negate the need for re-working or re-coding of other components. Where appropriate, web services and APIs (such as XML or JSON RESTful APIs) are created to allow for external interaction with the data to allow the solution to interact with other solutions with little to no changes required.