1. Ashta Koota Milan (8-Point Compatibility System) 
Horoscope matching is based on 36 points (Gunas) across 8 categories (Kootas):

Varna (1 point): Spiritual & mental compatibility
Vashya (2 points): Mutual attraction & dominance
Tara (3 points): Health & well-being
Yoni (4 points): Sexual & biological compatibility
Graha Maitri (5 points): Mental connection
Gana (6 points): Temperament compatibility
Bhakoot (7 points): Financial & emotional stability
Nadi (8 points): Health & genetic compatibility
Total Matching Score:

18+ points – Good compatibility
24+ points – Very good match
30+ points – Excellent match

2. Mangal Dosha (Mars Affliction) 

If Mars (Mangal) is in certain houses, it may cause problems in marriage.
Remedies include specific pujas or marriage between two Manglik individuals.

3. Dasha Analysis 

Checks the planetary periods affecting marriage life.

4.Navamsa Chart (D9 Chart) 

Examines deeper marriage compatibility and planetary influences.