Why did SpaceX acquire Mesh? It's not that SpaceX started standing in the light, in fact, the scale of SpaceX's intersatellite laser network is already very large. A few days ago, the Federal Trade Commission (FTC) approved Musk's acquisition of Mesh, which was quickly approved and is one of SpaceX's recent series of mergers and acquisitions. Let's talk about this acquisition: 1. Mesh was founded by three former SpaceX engineers in 2025, who led the design of Inter Satelite Laser Links for Starlink satellites. The core product is a high-speed optical transceiver for AI data centers, which uses optical signals instead of traditional electrical signals to transmit data. Simply put, they have transformed the technology of satellite laser communication at SpaceX into optical modules for ground (and future space) data centers. 2. Why did SpaceX acquire it? The reasons are as follows: 1) The three founders are the top engineers of SpaceX Starlink's laser communication team, consisting of core talents and technology. After they left, they brought this technology to the field of commercial data centers. Now SpaceX is acquiring people and technology together to avoid technology leakage. 2) Addressing the core bottleneck of AI data centers: interconnection power consumption and speed. SpaceX is currently building large-scale ground AI data centers (in Tennessee, Mississippi, and other places) and has signed huge computing power contracts with companies such as Anthropic and Google. The interconnection between thousands of GPUs in an AI cluster requires extremely high bandwidth, low latency, and low power consumption. At present, the interconnection of electrical signals has reached its physical limit, and optical interconnection is widely recognized as the next generation solution. Acquiring Mesh can directly improve the energy efficiency and performance of SpaceX's own data centers. 3) To pave the way for the "Orbital Data Center" strategy, SpaceX has clear plans to deploy large-scale computing power in space (using satellites as data centers). The space environment has natural advantages (free solar energy, good heat dissipation), but one of the biggest challenges is high-speed communication between nodes. And laser/optical communication is exactly SpaceX's area of expertise (Starlink has been extensively validated). Mesh's technology originally originated from Starlink laser links, and after acquisition, it can seamlessly adapt to space scenes, achieving efficient optical interconnection between space and ground. 3. In fact, there is the most important factor that many people overlook. SpaceX's layout and application in the laser field are actually the deepest and widest. 1) This year's SpaceX IPO filing disclosed that as of March, it had over 23000 inter satellite lasers, which refers to the number of lasers/laser terminals. There are three lasers on a satellite, and each laser is paired with another laser at the opposite end to form a usable link. So the number of active star chain links corresponding to the 23000+laser is roughly on the order of 10000. 2) Interstellar laser (ISL) has been explicitly included as a standard component in the production line and is now a steady-state, large-scale industrial product, placed at the same level as power supply, propulsion, and phased array antenna. 3) SpaceX explicitly stated in its IPO documents that the earliest deployment of computing power satellites would be 28 years ago, and the truly noteworthy aspect is the orbit selection. Sun synchronous orbit means that AI computing power satellites are distributed along a specific polar orbit band, with short transit times, and cannot always stare at a ground station like synchronous orbit satellites. All data traffic must rely on inter satellite laser networks for feedback. In other words, Starlink's laser network is the backbone of the space data center's return journey. 4) SpaceX has commercialized its Starlink intersatellite laser link (ISL) technology and named it Plaser (Plug and Plaser). Intended to provide access services to the "Space Laser Backbone Network" for other satellite companies. Third party satellite companies can purchase these laser hardware and install them on their own satellites. The third-party satellite is connected to SpaceX's Starlink Interstellar Laser Mesh Network through Plaser's laser terminal. Through this network, third-party satellites can transmit data back to any satellite link ground station on Earth, thereby bypassing the cost of third-party self built inter satellite links and ground stations. Plaser completed its first in orbit validation through the Polaris Dawn mission in September 2024 and has already signed commercial clients (such as the Vast commercial space station) to use it, marking the official transition of the project from the technical validation phase to commercial application. SpaceX realizes commercial realization by leasing the spare laser communication capacity of the satellite link network, expanding the satellite link from a simple satellite Internet service to a "network as a service" provider of space laser communication. 5) Through Plaser, SpaceX is consolidating the factual standards of laser communication towards its own products. To access Plaser, third-party satellites must operate within the hardware interfaces, electrical interfaces, and protocol layers defined by SpaceX. From this perspective, SpaceX is both a network operator, an interface definer, and a potential hardware competitor. For some companies that independently produce laser terminals, Plaser is a new customer; For another group of satellite operators planning to build their own inter satellite link networks, Plaser has changed their cost curve. 6) There is another longer-term judgment worth mentioning here. SpaceX is pushing the Plaser interface towards the 'de facto standard'. The Optical Communication Terminal (OCT) series specification of the Space Development Agency (SDA) is one of the mainstream standards for satellite laser terminals in the US government, which has already specified key parameters such as link rate, modulation format, wavelength window, etc. The compatibility between the Plaser interface and the OCT standard, and who dominates as the de facto standard for commercial satellites, will gradually emerge in the next 1-2 years. So this acquisition is not SpaceX's first time standing in the light, but rather an enhancement of its past inter satellite laser communication network, acquiring key core talents to pave the way for the deployment of computing satellites.