I have (5 years) experience as Italian instructor at the University of Tennessee.
In addition, I have used my skills in several environments:

- Private tutoring, from basic to advanced.

- Training of managerial personnel at important
companies.
The nature of said training including the teaching of the language as well as the culture and relevant elements of Italy’s social and institutional landscape.
<===========>

The format and structure of the lessons are not uniform or following standard guidelines independently from the type of audience.
The most suitable approach must be tailored, among other factors, on:

- Number of students and relative age(s).
- Level of initial knowledge of the class
members.
- Type of interest; viz.: learning for academic purpose vs professional interest;
tourist’s need to manage basic elements vs long term plan of studying the language.[ETC.]

If I were to extrapolate the commonalities between the heterogeneous types of all conceivable learning environments , I would identify those as following:

1. A rigorous/challenging teaching environment.

2. Use of a multimedia based tools and
materials, in both class teaching and
assignments.

3. Encouraging cooperative learning (in a
teacher-guided fashion) outside of the regular
lessons time

3. A sharp focus on individual needs and
one-to-one interaction with the single student
(in parallel with the collective instruction).

That kind of approach is achieved by scheduling periodical virtual meetings and correspondence with each student.
Feedbacks from students are in this context of paramount importance.
The key concept here is:
A deliberate effort aimed at monitoring and improving the status of the individual student’s learning experience.