The knowledge, skills, behaviors of the team, and what's known and not known will impact not only how effective the team is but also the outcomes of what it can produce.

If there are multiple Scrum Teams working on the system or product release, the Development Teams on all the Scrum Teams must mutually define the definition of "Done". Each Increment is additive to all prior Increments and thoroughly tested, ensuring that all Increments work together.

Technical debt is a natural occurrence when developing complex products. It is a concept in software development that reflects the implied cost of additional rework caused by choosing an easy solution now instead of using a better approach that would take longer. And how it is managed will depend on the team AND context of the situation.

Sprints promote iterative and incremental development.

Technical debt is any shortcomings in the code. It is a natural by-product of software development (unavoidable) and can at best be managed. If neglected, it will compound and have a negative effect on the team's ability to the deliver value. A team can have an artificially high velocity by taking shortcuts or introducing technical debt into the system. This can give a false assumption about the current state of the product. It can look good on the surface but underneath can be a mess.