What is BLS certification?

is it basically adult/peds cpr and aed all into one?
Yes, Basic Life Support for adults/peds/AED and ALS is Advanced Life Support that includes advanced airways and advanced medications.

It's basically what used to be called CPR certification. ACLS is the advanced course.

For BLS Certification, you want a Healthcare Professional version. That is basically Adult/Peds/Infant CPR and AED all rolled into one course and covers single rescuer, two rescuers, and BVM use. Think of it as "BCLS" for Basic Cardiac Life Support.