While Agile favored communication over documentation, AI coding tools require explicit, unambiguous instructions. Product teams must now prioritize detailed specifications to leverage AI for development, marking a significant shift in the product lifecycle and a departure from lean principles.

AI tools accelerate development but don't improve judgment, creating a risk of building solutions for the wrong problems more quickly. Premortems become more critical to combat this 'false confidence of faster output' and force the shift from 'can we build it?' to 'should we build it?'.

Historically, the 'build' phase was the primary bottleneck in software development. With AI making building nearly instantaneous, the critical path to success has shifted. Mastery of the 'define' (scoping) and 'feedback' (learning) stages is now what separates winning teams from the rest.

In traditional software, building is the slowest step. With AI, a functional prototype can be created almost instantly. This shifts the critical bottleneck to the 'define' and 'feedback' stages of the development loop, demanding new organizational skills.

AI has compressed development cycles from weeks to days, but it hasn't equally accelerated human coordination. The new bottleneck is getting stakeholders aligned on strategy, planning user communication, and managing the "fuzzy" aspects of a launch. While coding saw a 100x speed-up, these coordination problems remain.

AI tools dramatically speed up code implementation, making engineering velocity less of a constraint. The new challenge becomes the slower, more considered process of deciding *what* to build, placing a premium on strategic design thinking and choosing when to be deliberate.

An engineering org was effective at using AI for delegating and assessing code, but failed to tackle large problems. The missing piece was a dedicated 'planning phase' to scaffold significant work before execution. Without it, their AI-driven compounding of learnings was limited to small, incremental gains.

While AI dramatically increases development speed, it's a double-edged sword. Without a solid product foundation, user understanding, and clear principles, teams will simply accelerate the shipment of low-value features. AI amplifies both good and bad practices.

While AI makes building software cheaper, this heightens the need for prioritization. The temptation to "build it all" ignores the total cost of ownership, including maintenance and support. Without the natural constraint of high development costs, strategic focus is paramount to avoid chaos.