When developing an internal communication strategy for the adoption of a major technology platform, the most critical starting point is diagnostic research. Strategic communication management emphasizes that effective strategies must be grounded in a clear understanding of stakeholders, audiences, and organizational context before tactics are defined. Option A reflects this foundational approach.

Interviewing key stakeholders allows the communication manager to understand leadership expectations, business objectives, perceived benefits, and potential sources of resistance. This insight ensures that communication efforts are aligned with strategic goals and that leadership concerns are addressed early. Conducting an audience analysis is equally essential, as different employee groups will experience varying levels of impact from the new platform. Understanding how roles, workflows, and responsibilities will change enables the communication manager to tailor messages that are relevant, credible, and practical.

Assessing available and preferred communication channels completes the strategic diagnosis. Internal communication effectiveness depends not only on what is communicated, but also on how and where messages are delivered. Channel assessment ensures that messages reach employees through trusted and accessible platforms, increasing the likelihood of engagement and adoption.

The other options focus prematurely on tactics such as naming, media planning, scheduling, or creating champion networks. While these activities can be valuable later in the process, they are not appropriate substitutes for upfront strategic analysis. Without understanding stakeholders, audiences, and channel preferences, tactical execution risks being misaligned, ineffective, or ignored.

Therefore, from a strategy development perspective, option A best reflects the disciplined, research-driven approach required for successful internal communication and change adoption.