The Perpetual Mechanical Array is one of the more unique Field Bosses in Genshin Impact, primarily due to its intricate mechanics and its association with the Electro Archon, Raiden Shogun. Here's a detailed overview.
Image via HoYoverse.
The Basics
•Location: Inazuma's Grand Narukami Shrine. The Perpetual Mechanical Array is fought at the Grand Narukami Shrine, which is located high above the city of Inazuma.
•Appearance: This boss takes the form of a large, intricate mechanical construct with multiple parts that resemble both traditional Japanese architecture and advanced machinery. It's surrounded by a series of rings and has a main core that appears to be the central hub for its functionality.
Combat Mechanics
•Phases: The fight against the Perpetual Mechanical Array is divided into several phases that change its behavior:
•Initial Phase: The boss starts with an outer barrier that needs to be broken down through consistent damage.
•Elemental Rings: After the barrier is broken, it will summon elemental rings that orbit it. These rings can be destroyed to damage the boss's core.
•Mechanical Beasts: During combat, it might summon smaller mechanical beasts that need to be dealt with to avoid additional threats.
•Electro Infusion: The boss can infuse its attacks with Electro, increasing the difficulty of the encounter by adding elemental damage to its strikes.
Attacks
•Laser Beam: Fires a powerful laser beam that sweeps across the battlefield.
•Orbital Rings: Summons rings that orbit and can attack or spawn enemies.
•Shockwaves: Creates shockwaves that cover a large area, requiring players to dodge or be knocked back.
•Electro Bolts: Rapidly shoots Electro bolts in various patterns.
Strategy 
•Barrier Breaking: Focus on quickly dismantling the initial barrier with damage from all characters.
•Elemental Rings: Prioritize destroying the orbiting rings to expose the core for direct damage.
•Dealing with Summons: When mechanical beasts appear, it's often wise to quickly dispatch them to avoid being overwhelmed.
•Elemental Reactions: Using characters that can trigger reactions like Overload (Pyro + Electro) can help in damaging both the boss and its rings.
•Characters with high Electro resistance or shields like Zhongli can mitigate damage from Electro-based attacks.
•Team Composition: Main DPS: Characters like Eula, Xiao, or Hu Tao can deal significant damage.
•Supports: Venti or Sucrose for crowd control with their crowd suction abilities, or Zhongli for shields.
•Healers: Given the boss's high damage output, having a healer like Bennett, Jean, or Kokomi is advisable.
Rewards
•Defeating the Perpetual Mechanical Array grants:
•Primogems
•Hero's Wit
•Mystic Enhancement Ore
•Materials such as "Seelies" or "Divining Scrolls" which are crucial for character talent upgrades.
Tips: 
•Master Dodging: The Perpetual Mechanical Array's attacks, especially the sweeping laser, require good timing to avoid.
•Focus Fire: After rings are broken, immediately focus on the core before it can regenerate barriers.
•Elemental Mastery: Characters with high Elemental Mastery can benefit from the Electro reactions happening during the fight.
•Understand the Mechanics: Knowing when to switch targets between the rings, the core, and summoned enemies is key to managing the fight effectively.
The Perpetual Mechanical Array not only tests a player's combat skills but also their ability to manage multiple threats and mechanics simultaneously, making it one of the more engaging boss battles in Genshin Impact.
