The SETI program has been monitoring the skies for the better part of the last 4 decades. Their mission is to point radio telescopes at distant regions of the sky in the hopes of finding signs of alien civilizations, in the form of unequivocally alien and intelligent radio signals. They basically scan through a myriad of radio frequencies in the hopes of finding a signal that does not sound like interstellar noise, much like we used to turn our pre-digital radio dials to find a station that would play crystal-clear Johnny Cash songs while road-tripping across the continent.
Based on the Drake equation, there was hope that within the Milky Way alone, there would have been a myriad of alien civilizations likely to broadcast signals our way, meaning that we should logically tune in to such a manufactured signal eventually. What SETI is not doing is searching for signs of alien intelligence closer to home, in the form of spacecrafts or probes that would have been sent to explore the galaxy.
In marketing professional services, there is generally a lot of effort spent trying to tune into the noise in the hopes of finding the ideal client. While the success rate of marketing your firm this way is thankfully far better than that of SETI's likelihood of finding proof of alien intelligence, it is a very time-consuming endeavour and doesn't always connect you with the proverbial ideal clients, let alone makes it harder to sell your services because you are not standing out in a sea of businesses all using the same tactic.
Instead, single-mindedly searching for the proverbial "alien probes", i.e. those clients that are looking to engage someone like you might feel more like looking for a needle in a haystack, but when you do find those people they will be primed for hiring someone like you to solve their problem and the sale will be easier. The more targeted tactics one can employ are too numerous to list here, but they should be adapted to your goals, as not every tactic will work in every situation. It will also be easier to stand out with this approach, because the niche market you're operating in has fewer competitors by virtue of being smaller and more specialized.
Casting a wide net can have its benefits, but a highly targeted approach will yield more profitable work with more engaged clients in the long term.
Where do you think you should spend your energy searching for the alien probes?