The initial stage involves the commencement and preparatory tasks essential to fulfill the business requirements for a new enterprise architecture. This encompasses establishing an organization's architectural framework and formulating guiding principles.
A) Architecture Vision
The immediate phase of the Preliminary stage is Architecture Vision. This mainly focuses on the better understanding of the key features, customer requirements, and includes the Architecture Vision, which describes the desired upcoming state of an enterprise. Here, TCS aligns the vision that of the organization’s strategic goals and mottos.
B) BusinessArchitecture                                                                                                      As it is planned to shift to the cloud, company needs to hire new cloud engineer professionals or workers. In this phase, it mainly develops a detailed plan based on the inputs gathered in phase A. The ultimate outputs include a set of architectural requirements, principles, and a Business Architecture document. TCS always tries to create detailed business architecture.
C) Information Systems Architecture
The objective of Phase C is to develop Target Architectures covering either or both (depending on project scope) of the Data and Application Systems domains.
The scope of the business processes supported in Phase C is limited to those that are supported by IT, and the interfaces of those IT-related processes to non-IT-related processes.
D) Technology Architecture
This phase, Technology Architecture develops a keenly observed and detailed plan based on the outputs from the previous phase (Phase C). Here, the TCS’s business and information systems architectures are aligned to the technological architecture; it also involves selecting and standardizing any one specific technology to out-reach with the goals of the organization.
E) Opportunities & Solutions
Phase E is the first phase which is directly concerned with implementation. The task is to identify the major work packages or projects to be undertaken. An effective way to do this is to use the gap analysis on the business functions between the old environment and the new, created in Phase D. Any functions appearing as "new" items will have to be implemented (developed or purchased and deployed).
F) Migration Planning
Migration planning phase is the phase where the detailed plan for transitioning from baseline to the target architecture will be developed. Here, it develops a migration plan for implementing changes to TCS’s architecture. This might involve a phased approach to minimize disruption to ongoing operations.
G) Implementation Governance
It establishes governance mechanisms to ensure that the effective implementation of the planned architecture is going well. It reviews the implementation structurally. This might include defining the roles & responsibilities, monitoring progress, and addressing any issues that arise during the implementation.
H) Architecture Change Management
The objective of Phase H is to establish an architecture change management process for the new enterprise architecture baseline that is achieved with completion of Phase G. This process will typically provide for the continual monitoring of such things as new developments in technology and changes in the business environment, and for determining whether to formally initiate a new architecture evolution cycle.

For an organization like TCS, the application of TOGAF would likely involve collaboration across various business units and technology teams. It’s essential to engage key stakeholders, including business leaders and IT professionals, throughout the process to ensure that the resulting architecture meets the organization’s needs and goals. The management of architectural requirements across the ADM is examined by requirement management.