Recreational / Hobbyist UAS pilot reported conducting a UAS flight in controlled airspace without LAANC authorization.

Narrative

I am a newly licensed Remote Pilot (Part 107) and recently purchased my first non-recreational UAS. Years ago with my recreational UAS; I familiarized myself with airspace maps using DJI's software. At that time; the airspace above my private residence did not display any issues on the mapping software for flight. After my most recent purchase; during pre-flight check for the initial test flight; I briefly checked the FAA's airspace map to reaffirm my prior understanding. It appeared that my private residence was not in restricted airspace; but rather just outside the nearby Class D airspace. The DJI software I was using this time had just undergone a software update. It did not display to me any indication of being in a no-fly zone; which my previous recreational drone would do. I then conducted several test flights at maximum 80 ft AGL above and around my private residence before landing safely.Later the same day; while researching no-fly zones for a separate commercial operation I was planning at another location; I noticed a discrepancy in my earlier understanding. After cross-checking a few different airspace resources; I realized I apparently misread the first map. The Class D boundary was not where I understood it to be; and my residence is actually just inside the border.As soon as I recognized the error; I contacted the FAA to request guidance on the appropriate steps to take. My intent was to be transparent; take responsibility; and ensure proper compliance moving forward.In review of these events; I believe the primary contributing factor; besides my newness to non-recreational flight; was that my familiarity with the older boundaries/classifications led to an incorrect assumption that they remained the same. Secondly; a lack of knowledge as to what new mapping resources are available to professional UAS pilots. Third; I should've cross-checked the maps I relied on sooner.As corrective action; I have researched LAANC service providers such as Aloft and Autopylot to learn proper authorization procedures for controlled airspace. I have strengthened my understanding of my responsibilities and due diligence ahead of time as a Remote Pilot; and my commitment is to operate safely; responsibly; and in full compliance with FAA regulations going forward.