The us vs them mentality between Agile and Waterfall that coaches often preach is itself a violation of the agile principle of people over process. You should i

The us vs them mentality between Agile and Waterfall that coaches often preach is itself a violation of the agile principle of people over process. You should identify what process best fits your product/customer/team, then use that process. Some products require lots of upfront requirement elicitation before you can even identify the appropriate solution-- and that's ok. Imagine prioritizing a working software in a sprint over figuring out what your customer needs. I recently observed from the outside a project that took upwards of two years of requirement elicitation, IP contracting, complex distribution of ownership between multiple competing companies, multiple OS's, complex hardware platform design revisions to support the intended software functionality. Not a single line of code was written for two years. Was this state of the art engineering? YES. Did they operate under the principles of the agile manifesto? YES.