Table:
|  |  |  | Fiscal 2019 |  |
| --- | --- | --- | --- | --- |
|  | Probe Cards | Systems | Corporate and Other | Total |
| Revenues | $491,363 | $98,101 | $— | $589,464 |
| Gross profit | $211,382 | $50,927 | $(24,813) | $237,496 |
| Gross margin | 43.0 % | 51.9 % | — % | 40.3 % |
|  |  |  | Fiscal 2018 |  |
|  | Probe Cards | Systems | Corporate and Other | Total |
| Revenues | $434,269 | $95,406 | $— | $529,675 |
| Gross profit | $187,320 | $47,074 | $(24,055) | $210,339 |
| Gross margin | 43.1 % | 49.3 % | — % | 39.7 % |
|  |  |  | Fiscal 2017 |  |
|  | Probe Cards | Systems | Corporate and Other | Total |
| Revenues | $454,794 | $93,647 | $— | $548,441 |
| Gross profit | $195,903 | $46,647 | $(26,953) | $215,597 |
| Gross margin | 43.1 % | 49.8% | — % | 39.3 % |
Paragraphs:
Note 15—Segments and Geographic Information
We operate in two reportable segments consisting of the Probe Cards Segment and the Systems Segment. Our chief operating decision maker ("CODM") is our Chief Executive Officer, who reviews operating results to make decisions about allocating resources and assessing performance for the entire company. The following table summarizes the operating results by reportable segment (dollars in thousands):
Operating results provide useful information to our management for assessment of our performance and results of operations. Certain components of our operating results are utilized to determine executive compensation along with other measures.
Corporate and Other includes unallocated expenses relating to amortization of intangible assets, share-based compensation expense, acquisition-related costs, including charges related to inventory stepped up to fair value, and other costs, which are not used in evaluating the results of, or in allocating resources to, our reportable segments. Acquisition-related costs include transaction costs and any costs directly related to the acquisition and integration of acquired businesses.
Question:
What are the different streams of revenue?
Answer: Probe Cards, Systems, Corporate and Other