How do you adjust your roadmap for different development methods?

Also, you defined milestones for new feature to be realised. And only on this mile stones you create a new release. While agile is more like if it ready it will be ready for use. You defined the features before the sprint. And make changes according to the user experince.

In my experience, the best way to about it, is to align the roadmap business goals with technical capabilities, list the features and dependencies. Now request the solution high level design to the architecture team. Identify which teams are required, working methodology and delivery calendar. If certain features require MVP, align with architecture a provisional design and a canonical one, before deciding, know this potential decision represents technical debt. Then define your roadmap according to your main product team velocity and methodology, you’ll likely have an integration team with a different calendar, for each dependency team use a spike to determine calendar and approach. Redo your roadmap, but always mind business impacts.

Roadmap strategy entirely depends on the North Star Metric of the organization and technical development capability. It is crucial to breakdown the business goals into short, medium and long term categories and then aligning them with the best possible timeline with the required technical requirements.

Product roadmap for the Waterfall development method typically follows a linear and phased approach with well-defined stages. (Gather Requirements > Plan > Design > Develop > Test > Deploy > Maintain) This roadmap illustrates a typical Waterfall approach, where each phase is completed before moving to the next. It emphasizes thorough planning, documentation, and formalized processes. However, keep in mind that the Waterfall method may not be suitable for all projects, and some organizations may opt for hybrid approaches or incorporate Agile principles for greater flexibility and adaptability. The choice of methodology should align with project requirements and organizational preferences

A product roadmap for Agile development is more iterative and flexible compared to Waterfall. It focuses on delivering value to users in smaller increments. (Discover > Plan > Develop > Test > Deploy > Continous Improvement...) Key features of an Agile product roadmap include flexibility, adaptability, and a focus on delivering value incrementally. The roadmap evolves as new information becomes available, and user feedback guides feature development. Agile teams prioritize collaboration and frequent communication to ensure alignment with customer needs and organizational objectives.

A product roadmap for a hybrid development method combines elements of both Agile and Waterfall approaches to suit the project's specific needs. It offers flexibility while maintaining a structured framework. In this hybrid approach, Agile methodologies drive incremental feature development and adaptability, while Waterfall processes provide structured planning, formal testing, and risk management. The balance between the two methods allows for flexibility while ensuring that quality and stability are maintained, especially in critical phases of the project.