The significant barrier of messy, legacy data is being overcome by AI. Snowflake is developing "agent-driven migrations" that automate the process of moving data from old systems onto modern platforms. This drastically reduces project timelines from multiple years to just a few weeks.

For 50 years, software development operated at one level of abstraction: humans writing software. AI agents introduced a new level: humans telling models to write software. Now, advanced routines introduce a third level: models telling other models what to do, representing an unprecedented acceleration in programming abstraction.

AI coding's true enterprise value is limited because models struggle with legacy systems. Companies run on trillions of lines of mediocre code in old languages like COBOL—a problem that requires human intervention over decades, not a simple AI solution, which limits immediate, real-world impact.

Migrating from legacy enterprise systems was once a multi-year ordeal, creating powerful vendor lock-in. AI now automates the process by analyzing environments, converting code, and validating results. This has reduced migration timelines to as little as 30 days, dramatically lowering switching costs for large companies.

What was once a significant moat for SaaS companies—complex data migration—is collapsing. An AI agent, '10k', completed the core lift of a 10-year Marketo data migration, a project quoted at $100k and one year by a human agency, in a single hour for just $14.21 in compute costs.

AI-driven approaches dramatically reduce the time and cost of modernizing legacy systems. What was once a multi-year, multi-million dollar mainframe project can now be completed in as little as 90 days, fundamentally altering the ROI for tackling technology debt.

Enterprises are trapped by decades of undocumented code. Rather than ripping and replacing, agentic AI can analyze and understand these complex systems. This enables redesign from the inside out and modernizes the core of the business, bridging the gap between business and IT.

Enterprises are finding immediate, high return on investment by using AI to port legacy codebases (like COBOL) to modern languages. This mundane task offers a 2x speed-up over traditional methods, unlocking significant infrastructure savings and even driving new developer hiring.

AI coding assistants have recently crossed a critical threshold. They are no longer just for building new features but are now highly effective at refactoring legacy code. This dramatically changes the economics of modernizing established software companies by accelerating the notoriously slow process of paying down technical debt.